Poron, microcellular polyurethane, cushions weight in your forefoot and evenly spreads it out so you feel less pressure in one spot * Self-adhesive backing secures cushion in place so there"s no need to adjust fit * Compact size fits easily into most shoes without changing fit; Fits normal foot types, including flat feet * Helps relieve Ball-of-Foot Pain, Metatarsalgia * Left and right design provides a more exact fit inside shoe