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Discover 25 hidden features in everyday items that reveal the genius of modern engineering. From secret holes to tiny switches and odd shapes, these clever design details actually serve smart purposes. Learn how they boost safety, convenience, and durability. After this, you’ll never look at ordinary objects the same way again. See how many you’ve spotted before.
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00:00Sometimes, when you type big text on your phone, it's pretty hard to get the cursor where it needs to
00:05be.
00:05You can control this little thing using your space bar.
00:08Simply hard-press the space bar and now you can move the cursor wherever it needs to go.
00:13Voila!
00:16You can get bite-sized pineapple pieces without using a knife.
00:19At least that's what this viral TikTok tip is promising.
00:23First of all, twist off the top of the pineapple, that part which has green leaves.
00:28It's pretty easy. Just grab it and make several twists.
00:32Then pick the pineapple up and pound it down on the kitchen table.
00:36Repeat the pounding for about five times to make sure you did it sufficiently.
00:41Now you're going to need some arm strength.
00:43Roll the pineapple back and forth while pressing down on it.
00:46The weight is supposed to help separate the core from the fruit.
00:50But beware if your pineapple is very ripe, it might start to release juice.
00:55Now, gently hold the pineapple skin, pull out one of its scales and enjoy your snack.
01:01If you've done everything right, you're supposed to be able to pull out a bite-sized piece that will separate
01:06from the core quickly.
01:09Here's another game-changing tip for your kitchen.
01:11Get a habit of storing the cling wrap in the freezer.
01:14When the wrap is cold, it's less sticky and much easier to unroll and use.
01:20You're welcome.
01:23We usually place these non-slit bathtub mats on the bathtub's surface to prevent falls.
01:28But when you're not using the bathroom, you can stick or hang them on the wall.
01:33This way, the mat will get dry way faster and you'll prevent the accumulation of soap and dirt leftovers on
01:39the bottom of the bathtub or shower.
01:42Gather your shower curtain into a single bundle and tie it into a big knot.
01:47This way, it won't create obstacles when trying to clean the bathtub.
01:53Remember those mysterious stripes on bathroom towels?
01:56It's not just a decoration.
01:58It's a stabilizer strip to help the towel last longer.
02:02Stripes help keep the towels fluffy by limiting the shrinkage every time you wash them.
02:07Therefore, the towel retains its shape, size, and flexibility over time.
02:13They're also handy when you need to dry and clean a narrow and hard-to-reach place where the thick
02:18part doesn't work because it's too fluffy.
02:21For example, the space between your toes or behind your ears.
02:26Also, the stripes help to sort towels by type.
02:30Otherwise, all the towels of the same color and texture would look alike.
02:34You can see the stripes when you fold the towels properly, so it's easier to differentiate.
02:39This way, you can keep all the towels together in a linen closet.
02:43Your family members will never confuse their own towels with someone else's.
02:49Are you sure you know how to use this flat paper box with matches?
02:53You just have to take a match and slide it across the striking surface, right?
02:58Turns out, there's another way.
03:00Put the matchstick head on the striking surface, close the box, and pinch it.
03:05Then, pull the match out with one quick and confident movement, and it should light up.
03:12By the way, when you light up a matchstick or a candle in a dark room, the flames don't have
03:17shadows.
03:18Did you know that?
03:21The circle on the plastic jug of milk can tell you if the milk is good or bad.
03:25So when the circle is inside, take this as a good sign.
03:29And when it pops out, it means that the milk is expired.
03:34Also, the circle helps to keep the jug from blowing up if you drop it.
03:37When it hits the ground or any other surface, the ring will expand to keep the milk inside the plastic.
03:43And if you leave milk in the fridge for too long, it will develop gases.
03:47In this case, the circle will prevent the jug from popping inside the fridge.
03:52When it comes to plastic bags with frozen food, we usually cut off a strip from the top to open
03:58the package.
03:58But you don't have to throw the strip in the trash right away.
04:01You can tie the bag with the remaining food and put it back in the freezer.
04:07Let's say you're driving a car through the night.
04:09Suddenly, some annoying driver behind you with the brights on gets closer and spoils the party.
04:15You can flip this little tab on your rearview mirror and make the bright lights fade away.
04:19In fact, this little mirror that looks flat is a so-called prismatic wedge.
04:25What looks flat is an angled mirror with a wedge of glass.
04:29When you switch the mirror to dim mode, you change the angle of the mirror so it reflects more light.
04:36Here's a cool safety tip when you have to park your car at some risky spot at night.
04:40Pull out the driver's seatbelt, put it through the door handle, and fasten the belt as usual.
04:45This way, you'll ensure that nobody can get in during the night.
04:49Even if they succeed in getting the door unlocked, they still won't be able to come in.
04:55If your car got frozen on a cold winter night and the glass is covered with ice, you can clean
05:00it using the following tip.
05:01You don't need any special cleaning brush.
05:04Just fill a big sealable plastic bag with hot water and wipe the bag over the car to defrost the
05:10ice.
05:11Now, wipe off the remaining water with a rag and you're ready to hit the road.
05:17Everyone knows how to hang a sweater, right?
05:20Well, there's a better way that helps avoid the shoulder pimples that arise when the hanger doesn't fit your clothes
05:25perfectly.
05:26Put your sweater flat on your bed and fold it in half, like this.
05:30Then, place the hanger on the sweater on a diagonal, like this.
05:34Remember that the hanger hook should be under the arm.
05:37Now, grab the arms and fold them across the hanger.
05:41And then, hold the body of the sweater and fold it across in the same manner.
05:46Congratulations! Now you know the perfect way to hang your sweater.
05:51If you're out of staples, you can just turn your stapler over.
05:54And there's a secret little compartment where you can put a whole row of extra staples.
05:58And now you can just conveniently put it into your stapler and go on with your work.
06:05There's a big chance that your oven door is removable.
06:09This way, you can clean it between the glass.
06:11Of course, the mechanism may differ depending on the model.
06:14So, first of all, check the lower corners of the door.
06:17And you'll probably find two screws that will help you lift the door up and then put it back where
06:22it belongs.
06:24Here's a hilarious tip for peeling boiled chicken eggs.
06:28Remove some shells from the top of the egg.
06:31About the size of a small coin.
06:33Then, break up the bottom of the egg.
06:35And now, blow into the top hole as if you're blowing a balloon.
06:40The peeled egg should pop out of the bottom.
06:43Just make sure the eggs are hard-boiled.
06:47If you have a basic electric screwdriver, you can order special brush heads.
06:51Your cleaning routine will never be the same again.
06:54This device will help you quickly and easily clean the dirtiest tiles and gaps between them.
07:00Just spray some bath cleaner and let your screwdriver brush remove all the impurities.
07:05Although this simple tip is very satisfying,
07:08some say that the sound evokes memories of dentists and ultrasonic dental cleaning.
07:19Ever wondered what that little hole at the top of your sink is for?
07:22There can be one, two, or three of them, depending on the design.
07:27These holes may appear under the near rim facing the mirror.
07:30They may face forward if they're between the faucet valves.
07:33The holes are there to prevent an overflow and to allow air in the drain to circulate.
07:39If the hole wasn't there, a basin filled with water would drain slowly
07:43because of the resistance it puts on the air going out of the drain.
07:46Your bathtub also has this hole, but the kitchen sink doesn't.
07:50A bathtub takes longer to fill, so you may get distracted, walk away, and forget you're filling the tub.
07:57So it's kind of more necessary there.
07:59The kitchen sink has overflow protection in the shape of the divider between the two standard basins.
08:05And this divisor rises lower than the rim.
08:10The majority of hiking backpacks have a secret feature that can literally save your life.
08:16If you have one, take a closer look at its chest strap.
08:20You'll see there's a built-in whistle on its buckle.
08:22It's for situations where you're all alone, stuck somewhere while hiking,
08:27or you were in a group but eventually separated from them.
08:30Uh-oh.
08:31Not all backpacks have a whistle, but those modern ones,
08:35designed specifically for mountain biking, hiking, snowboarding, skiing,
08:38and other similar outdoor activities, do.
08:43Now, speaking of backpacks, and I was,
08:46many brands have standard models that come with a patch sewn into the outer part in the shape of a
08:51diamond.
08:52We call this the lash tab, or as some say, pig snouts.
08:57Originally, the manufacturers came up with this feature so people could carry an ice axe during mountaineering.
09:03They made it from leather because they wanted to reduce the possibility of freezing.
09:08Of course, the average backpacker doesn't go on such adventures.
09:11But the patch is still useful because you can hold and immediately access some items like headphones or a bottle
09:18of water,
09:19or tie your hiking shoes and some other essential things so you have more room inside your backpack.
09:27So, why do shopping carts have a grid system instead of being solid?
09:31There could be a couple of reasons for that.
09:34Manufacturers use less metal, so a cart is both lighter and cheaper.
09:38Also, the supermarket staff can see what's in your cart more easily.
09:42It's easier to keep the cart clean this way, too.
09:45Imagine if it was sealed and somebody spilled orange juice or milk inside of it.
09:50It's easier for a cart to drain this way if it's outside in the rain.
09:55Speaking of holes, why do you think laundry baskets often have holes?
10:00It's for the laundry inside to breathe.
10:02If you use it for dirty laundry, it's harder to vent the sealed basket and prevent your laundry from mildewing.
10:09Also, baskets without vents harbor way more static electricity.
10:15Have you noticed there's a funky little loop on your ski glove?
10:19Yup, the one on the finger.
10:21These gloves are specifically made for snowboarding, skiing, or some other alpine uses.
10:26Because of the loops on the finger, you can hang your gloves on the pack using a carabiner.
10:32Face their opening down, and gloves won't fill with any debris or snow while you're hiking or participating in some
10:38other winter activities,
10:40like falling and rolling down the hill, like what I tend to do.
10:44Now, even if you're not a professional alpine climber or something like that,
10:48it can still be good for you to use so-called carabiner clasps.
10:52With them, you can dry the gloves with the fingers upward.
10:55That way, if there's any condensation, it won't pull in the fingers but roll out the bottom.
11:03You know those silica gel packets that come with new bags, shoes, and many other products?
11:08Think twice before you throw them away.
11:10You might want to keep them because they preserve the freshness of your shoes or some other product you got
11:16them with.
11:17These bags are like a drying agent since they drive the moisture out of their surroundings.
11:22You can use them for other things, like, for instance,
11:25when you need to dry out your phone or something else that got water in the wrong place.
11:31Now, when dealing with a stapler, you can accidentally staple pages you didn't really want to put together.
11:37It's not easy to remove them unless you use a simple trick.
11:41Pay attention to the front part of your stapler.
11:44See that metal plate over there? It's called the anvil.
11:48Turn your stapler upside down.
11:50This way, you can spin the wheel to the temporary staple option so it won't be so hard to remove
11:55the pins.
11:56Yup, the anvil is there, so you can adjust the settings for the stapler.
12:02Now, we're so used to toothpaste being multicolored that we mostly don't even wonder why it's so.
12:09Well, back in the 1970s, people became more aware of how important dental hygiene is.
12:15They wanted their toothpaste to do more than simply clean their teeth.
12:19That's why Aquafresh was the first company that came up with a toothpaste that had ingredients for mouthwash, too, which
12:26is the blue stripe.
12:27Later on, they added red, which represents ingredients that help you take care of your gums.
12:35Aluminum foil boxes have a feature we can truly call hidden.
12:39It's not like anyone bothers to take a close look at the side of the box, right?
12:43There are rounded perforations you can punch through with your fingers.
12:47Just press your finger into the resulting hole and hold it.
12:51That's how you secure the cardboard rule while pulling out a foil.
12:57Beanie pom-poms look like a cute, or ugly if you're not a fan, ball on the top of your
13:03hat.
13:03It may not have a specific purpose today, but it hasn't always been a fashion detail.
13:09One of the possible explanations says that beanies are something the Vikings invented
13:14because they were looking for a way to keep their ears warm throughout the long, cold winters.
13:19After some time, they added pom-poms at the top, too.
13:22They were supposed to prevent the seams from coming apart.
13:26Now, I'm guessing the traditional horns were added sometime after that.
13:32You can find a tomato pin cushion for pins and needles in many households.
13:37But check this strawberry dangling from the top.
13:39It's kind of weird, considering this fruit doesn't grow on tomatoes.
13:43But in this context, strawberries are there for needles you're using at the moment
13:48so you don't get lost while searching through a bunch of other needles on a cushion.
13:54Take a look at the cap on top of your toothpaste tube or a cream.
13:58This pointed cone you see inside the cap is helpful when you're opening a new tube
14:03because you can use it to puncture the seal.
14:06Yup, no need to look for something sharp or use your nails.
14:12Is there a pattern of blue and white bristles on your toothbrush?
14:16Sure, it looks a bit more stylish like this, but this feature has an actual purpose.
14:21Manufacturers designed the blue dye to wear off.
14:24This mostly happens at the same time when you're supposed to be getting a new toothbrush.
14:28They recommend doing it every three to four months, but in case you forget, it can be a handy reminder.
14:38Many cars have black dots along the window edges.
14:41It's a cool design, true.
14:43But car manufacturers probably wouldn't spend so much of their money and time
14:47adding something that didn't have a practical use.
14:50These dots are something we call fritz, which are different than fritz, the German guy.
14:55When the temperature in your car reaches extreme fluctuations,
14:59the fritz are there to make sure the rim of the glass doesn't shatter.
15:03Good idea!
15:06Gas cans have a very small second hole.
15:09It's there to prevent some sort of the glug that occurs when air gets sucked into the hole
15:14as you pour the liquid out of it.
15:16Because, when something like this happens, the flow of liquid is not even,
15:20which means more of it will end up all over the floor.
15:24The hole is also there to help vent the gas and prevent the can from bursting in between uses.
15:29And that's a good idea, too.
15:32Hey, have you ever been vibing out in your room,
15:36listening to some of your favorite songs,
15:38admiring the subwoofer of your speaker as it delivers magnificence to your eardrums?
15:43We all have.
15:44But have you ever asked yourself why that same speaker,
15:47along with other speakers across the globe, is almost always black?
15:52Some of you are probably screaming at your screen right now
15:54about your speaker being green, red, or any other color found in the rainbow.
15:59Number one, I said, almost always.
16:02And number two, if you look closely at the gorgeous design of your brightly colored music player,
16:07you'll often find that the speaker beneath it is still colored black.
16:12One possible explanation for this is that the original technology of speakers
16:16had a diaphragm with black particles on it.
16:19So, as soon as a sound is amplified,
16:22it sends a charge through the diaphragm,
16:24and these black particles are driven upwards.
16:26The carbon particles bouncing and touching the upper membrane of the diaphragm
16:30are responsible for creating some of the distinct sounds from our speakers
16:34that we all love so much.
16:37Speaker manufacturers must have gotten tired of their products changing color with prolonged use,
16:42combined with these black particles settling on the upper membrane of the diaphragm.
16:46So, their logical solution was to color most speakers black.
16:52Another more practical belief as to why speakers are mostly colored black
16:56is that it's a hue that easily matches up with many types of decor.
17:01Walls, furniture, and clothes all often look quite well when combined with this color,
17:06which is why it's so prevalent everywhere you go.
17:10Listening to music has repeatedly scored in the top 10 pastimes in the U.S. based on research.
17:15Nowadays, you find sound speakers everywhere.
17:19In your television, laptop, and your phone, you can't escape them.
17:24But let's take a look at how they started off.
17:27Their origins are in radio and telephone technology.
17:30The first form of a speaker was developed by Johann Philipp Reis in 1861.
17:36The German was a self-taught inventor and installed the speaker on his telephone.
17:41It was just about able to reproduce clear tones,
17:44but it could also replicate muffled speech after a few revisions.
17:50Alexander Graham Bell, the inventor of the telephone,
17:54decided to try and produce an improved version of Reis's speaker.
17:58Essentially, Bell and other inventors wanted to make an electrodynamic speaker.
18:02By 1877, it was still yet to exist.
18:06But due to the desire of inventors worldwide to change this,
18:10research confirmed that it was extremely possible to make one.
18:13In particular, the work of Wernher von Siemens,
18:17who came up with the idea of an electromagnetic coil-driven speaker,
18:21was a driving force in arriving at this conclusion.
18:24Why are there magnets in speakers, you might ask?
18:28Every speaker nowadays has an electric current,
18:31something the inventors were discussing would never have taken for granted at any point in their lives.
18:36When this electric current is changing, it produces a magnetic field.
18:41To make the panel of the speaker move,
18:43magnets are used to create an opposing magnetic field which creates vibrations.
18:48These vibrations are the sound we end up hearing.
18:51The bigger the magnet, the louder the speaker will be.
18:55Another inventor by the name of Thomas Edison from the U.S.
18:59had filed a British patent for a system using compressed air for an amplifying mechanism.
19:05The first commercial electric loudspeaker saw the light of day only in 1924.
19:11The sound quality produced by the speaker was good enough for motion pictures.
19:15It took nearly 20 years for the next groundbreaking development in the world of loudspeakers.
19:20This came with the arrival of the duplex driver in 1943.
19:25It offered better clarity and coherence at high volumes, which was important in movie theaters.
19:31Fittingly, it was nicknamed the voice of the theater.
19:34The duplex driver was immediately tested by the Academy of Motion Picture Arts and Sciences
19:39and instantly made its film house industry standard in 1955.
19:45Until now, this loudspeaker design is still used.
19:49Indeed, the film industry does seem to put a lot of effort into its sound.
19:53And so do the theaters we watch them in.
19:56You may have noticed that these buildings often have thick curtains on the walls.
20:00These are soundproof or acoustic curtains, and both are much thicker than regular curtains.
20:06They will either consist of heavier fabrics that are tightly woven or have better quality linings.
20:12This means that these curtains will absorb sound
20:14and reduce the acoustic reflection off the ceiling, windows, and flat walls of the room.
20:20This ultimately creates a much better sonic experience.
20:23The carpet floors are so thick in theaters for the same reason.
20:27It helps to trap sound by providing insulation.
20:30From a practical standpoint,
20:32this carpet is also set up to prevent the sound of footsteps during film screenings.
20:36This concept of trapping sound is also the reason why putting a phone inside a cup
20:42will make the phone's speaker seem louder.
20:45Any speaker sitting or suspended in an open space projects its sound in all directions.
20:50As the speaker vibrates to create sound waves,
20:53an equal amount of energy leaves from both the front and the back.
20:58By placing a speaker in some form of enclosure,
21:01we can redirect some of the energy that comes from the back of the speaker and project it forwards.
21:07By putting the speaker in a cup, you're directing the sound more efficiently.
21:11It travels only one way, making it seem louder than what you'd hear when you take it out of the
21:17cup.
21:18Speaking of phones and speakers,
21:20ever wonder why your mobile device makes your speaker produce a buzzing noise?
21:24This can occur when the two gadgets are near one another
21:28and your mobile is trying to send and receive data.
21:31The transfer of information produces electromagnetic disturbances in the medium around the speakers.
21:37It creates noise in the audio,
21:39and as a result, you can hear the buzzing sound coming from the speaker.
21:43A simple way to protect the amazing vibe your speaker is creating for you
21:47from this irritating buzzing noise
21:50is just to move your phone away from your speaker, or vice versa.
21:54This will eliminate what is officially known as electromagnetic interference.
22:00Research across America shows that, on average,
22:0474% of people own two or more pairs of headphones.
22:0846% of them mention they listen to their headphones for more than two hours per day.
22:13Some choose the headphones by their looks, others by the sound quality.
22:18In either case, finding the right pair is important,
22:21since a lot of people are willing to spend over $100 on it.
22:25Headphones have become a true fashion accessory.
22:28That's why well-known figures are trying to make an impact in the headphone industry
22:33like it's the fashion industry.
22:35Music moguls Dr. Dre and Jimmy Iovine
22:38came up with the idea for the now world-famous Beats by Dre Headphones brand.
22:43They were walking along the Pacific Ocean one day in 2006,
22:47discussing a sneaker deal as they had an offer on the table from a major brand in that arena.
22:53After some discussions, they decided they wanted to do something they were more passionate about
22:58and landed on headphones.
23:00The duo's idea turned into a brand that was purchased by Apple in 2014 for $3 billion.
23:06It was the largest deal in Apple's history,
23:10and Beats by Dre controlled 70% of the headphone market at the time of signing.
23:15The move allowed Apple to take over the headphone space.
23:18The release of their popular wireless AirPods headphones in 2016 was another reason it happened.
23:25But how did these popular wireless headphones that many of us own actually work?
23:30These headphones rely on internal batteries to have enough power to remain wireless.
23:35Most often, they have conveniently built-in rechargeable batteries.
23:40But sometimes, they keep going thanks to standard AA or AAA batteries.
23:45They receive wirelessly transmitted signals from their paired audio sources,
23:50be it your phone or laptop.
23:52These signals are encoded by the source device
23:55and transmitted most commonly via radio frequencies or infrared carriers.
24:00The headphones receive the signal and decode it to audio.
24:03And just like that, it's music to your ears.
24:09Okay, I know it's kind of cold to the touch, especially on a freezing winter's day.
24:14But did you know that brass doorknobs actually serve a purpose apart from looking classy and shiny?
24:18Since it's a copper alloy, brass has antimicrobial properties.
24:22That means it can help get rid of harmful germs and bacteria, sometimes in up to two hours.
24:28In high-traffic areas, that's all the more useful.
24:31But since brass is much costlier than other metals like nickel and steel,
24:35you barely see these types of doorknobs anymore nowadays.
24:39Speaking of lovely multi-purpose items,
24:41most screwdrivers have a tiny little secret of their own.
24:44They can sometimes be slid through a wrench so that they can be used to create more torque when twisting.
24:49Not to mention the uses when it comes to bolts in hard-to-reach places.
24:54There's a reason why buttons on women's shirts are for the left-handed, and it has nothing to do with
24:59fashion.
25:00This practice dates back to the times when chambermaids were helping ladies dress themselves,
25:05and it was easier for them to perform their job with this orientation.
25:09Having the buttons placed as such indicated a sign of wealth,
25:13so it's easy to imagine why the practice carried on, even though most people dress themselves nowadays.
25:19Next time you receive a package in your mail, take a look at your box cutter.
25:24If it features some diagonal lines on the blade, you're in for a little design perk.
25:28Turns out that these are blades that snap off.
25:32Continuously cutting cardboard can dull the sharp edge of the blade.
25:35To help prevent the need to buy a brand new box cutter,
25:38the top segment along the next line can be broken off to reach a new sharp edge.
25:42To do this, check out the small hole at the base of the tool, sometimes called the blade snapper.
25:48The people that first came up with this brilliant invention were engineers,
25:52inspired by the way chocolate bars are segmented.
25:55Hold on a minute, don't throw away the cardboard package just yet.
25:59Most likely, you'll have some silica gel packets somewhere at the bottom of the box.
26:03Since this gel is basically a drying tool, it gathers up the moisture out of its environment,
26:08so you can store these packets for further occasions.
26:11Whether you'll need to dry out your phone or some other electrical object,
26:14you can place them in a container next to the silica gel to reduce the damage.
26:19You don't have to be a mechanic to know when a standard car tire needs replacing,
26:23since they come equipped with a neat indicator.
26:26Take a closer look, and you'll see that treads within the tire are a bunch of rubber notches.
26:32When the treads are evened out with the perpendicular bars,
26:35it's a sign you need to book an appointment with your local car service.
26:38Since most likely, the tires have lost most of their traction and may not be safe for driving any longer.
26:45The upper corners of a car windshield feature textured black dots melted into the glass edges.
26:51This neat add-on isn't there for design purposes.
26:54It's called Frit Glazing,
26:56which means that a special type of ceramic paint is added to the window for protecting its sealant from UV
27:02rays.
27:03It also conceals and creates a coarser surface for the adhesive used to set the window in place.
27:10Whenever you're up for a drive,
27:12check out if there's a small tab under your car's rearview mirror.
27:16Bet you didn't know it's there to help switch the mirror from daytime to nighttime views.
27:22It uses a prismatic glass technology to blur the reflection
27:26and reduce the glare of headlights behind you in traffic.
27:30People came up with these manually tilted mirrors in the 1930s,
27:33but they became standard somewhere in the 1970s.
27:37While you're in the car,
27:38check out the headrests,
27:40as you most likely don't know that they carry a little disguised purpose.
27:44Of course,
27:45they're adjustable to accommodate passengers of any height
27:47so that they get the proper support for their heads and necks.
27:50The hidden feature is that they are detachable
27:53and come with two very solid metal bars.
27:56Should you ever find yourself stuck in a car and need to make a fast getaway?
28:01These bars come in handy to crack out the car windows.
28:04So you're out for a drive and you're suddenly out of gas.
28:08What I'm about to describe sounds more like a meme than an actual situation bound to happen.
28:12But what if you're in such a hurry that you accidentally drive off
28:16with the gas nozzle still in the tank?
28:19Well,
28:19the nozzles have been designed to prevent any hazards from happening,
28:23rest assured.
28:23They feature a breakaway device that will allow the hose to separate when taken out with enough force.
28:30Initially designed in the early 20th century to be worn exclusively by basketball players,
28:36sneakers soon became one of those fashion fundamentals,
28:39similar to jeans and leather jackets.
28:41If you take a closer look at them,
28:43you'll see they have two extra holes on the side,
28:45similar to the shoelace holes.
28:47They're manufactured as such,
28:48not only to provide extra ventilation,
28:51but to allow people to get extra creative with their laces when wearing the shoes.
28:55Admit it,
28:56you've always thought that chopsticks are merged at the end for the sole purpose of keeping them together
29:01until you're ready to dig into your meal.
29:03That may or may not be the whole truth.
29:06Under a more detailed inspection,
29:08the wooden tools feature a square-shaped end.
29:10Chopsticks manufactured like this date back to an old Japanese traditional design,
29:16which can help with breaking the ends easily.
29:18The separated end can then be used as a resting block for the chopsticks
29:22to keep it more sanitized in hopes it can be used again,
29:25since they won't be touching the table or any other surface.
29:29Women's bikes have a special design,
29:32which, surprisingly, has a historical and fashionable purpose.
29:36The lower frame is for the most part meant to make up for the generally shorter height of ladies,
29:41compared to that of the average gentleman.
29:43While that is the case for handlebars and saddles,
29:46the overall frame is lower for an additional purpose.
29:49Way back when women wore long skirts and dresses all day,
29:53every day they needed to make sure their outfits wouldn't get caught in the frame.
29:57That's how we came up with a lower-framed bicycle,
30:00perfectly made for women and their needs at the time.
30:03The fact that toothpastes are multicolored
30:06is not just a nice perk to make dental hygiene more fun.
30:10There's a secret meaning related to each of the colors,
30:12which dates back to the 1970s.
30:15In those days, people grew more and more interested in their oral health care,
30:20and as such, they were looking for products
30:22which could do more than merely clean their teeth.
30:25One company was the pioneer in that regard,
30:28adding mouthwash to its toothpaste, meaning the blue strip.
30:31They later added on the red strip,
30:34meant to feature ingredients which helped with gum care.
30:37Speaking of toothpaste,
30:39check the cap next time you open a new tube.
30:41You may be in for a little surprise.
30:43There's a pointed cone shape inside the cap,
30:46so you can puncture the seal of the toothpaste
30:48without cutting yourself or ruining your manicure.
30:51Not to mention, it's more hygienic
30:53since you won't be able to transfer germs
30:55or other bacteria into the product itself.
30:58On the subject of bathroom countertop items,
31:01toothbrushes come with a neat add-on
31:03hidden in the bristle patterns.
31:05Apart from making the toothbrush look cooler,
31:07they also do come with a practical purpose.
31:10Most toothbrushes come with a pattern of blue bristles
31:13intertwined with white ones.
31:15The blue dye is meant to fade out,
31:17signaling the time when you need to replace your toothbrush.
31:21Dentists say that toothbrushes should be replaced
31:23every three to four months,
31:25but it does serve as a great reminder in case you forget.
31:28Still love playing with Lego?
31:30Don't judge.
31:31Hey, it's a great hobby for all ages.
31:33Notice there's a hole on top of the Lego heads?
31:36Behold, you're looking at a safety feature
31:38that the people at Lego designed to prevent choking hazards.
31:42The most dangerous issue should a person swallow
31:45any of these pieces is the blocking of the airways.
31:48Designing a hole inside the Lego head
31:51helps the air to flow freely through the piece
31:53until it can be removed safely.
31:56We're now used to all sorts of modern light bulbs,
31:59some tubular, some shaped like diamonds,
32:01and some even twisted altogether.
32:04Historically, light bulbs were round
32:06and the initial shape served a purpose in itself.
32:09It was mainly connected to the fact
32:11that glass bulbs were hand-blown,
32:13which gave them the round shape to begin with.
32:15The hidden practical reason was that the light bulb filament
32:18needed to be at the same distance
32:20from every surface of the glass sphere.
32:22The easiest way to achieve this
32:24was to make the glass in the shape of a globe.