Podiatry Felt

Podiatry (or chiropody) felt is a material commonly used by podiatrists to treat a wide range of foot problems. There are many ways in which the felt can be used. The felt has an adhesive backing and comes in different thicknesses. It can be cut to any number of shapes to keep the pressure of pretty much any part of the foot such as bunions and hammer toes:

Reference:
How to use podiatry felt padding