shoes animation. Text: Fashion School - Insoles - The inside piece of the shoe, often made of thermoplastic, gel, or foam, that sustains the bottom of the foot, and offers arch support and even distribution of weight. People will often replace the original insoles with specialized options that help improve fit or add extra comfort and support. Comfort insoles help with foot pain after long periods of standing, while support insoles, which are made of a harder material, help with extra stability.