Powerstep Memory Foam Insole Insoles : Powerstep Memory Foam insoles are made with slow-recovery memory foam, arch support, and a heel cradle in order to provide you with maximum comfort. These orthotic inserts are perfect for people with sensitive feet, and they make nearly any pair of casual shoes more comfortable. Full length, total contact support. Polypropylene support shell. EVA foam base and slow-recovery memory foam. Polyester top cover with antimicrobial treatment to resist wetness and odor. Recipient of the American Podiatric Medical Association Seal of Acceptance, which recognizes products that have been found beneficial to foot health, and of significant value when used in a consistently applied program of daily foot care and regular professional treatment.