From Vionic, the Unisex Relief 3QTR Insoles feature: Received APMA Seal of Acceptance If added rear-foot stability is what you need most, the deep heel cup of RELIEF ¾ will help do the trick weekday through weekend Podiatrist-designed as a cost-effective alternative to custom-made orthotics Vionic orthotics offer a convenient, pain-free solution for many of the common aches and pains associated with poor lower limb alignment Designed to help reduce over-pronation, a contributing factor to "flat feet” Designed for everyday use: walking, commuting, casual/light hiking Lightweight, medium-density molded EVA base for maximum support and superior comfort; deep heel cup designed to facilitate good foot positioning Features softer heel foam for added cushioning and comfort Fresh antimicrobial and Odorban™ anti-odor top cloth For best results, it is recommended that you replace your orthotics every 6-8 months Ideal for flat- or low-heeled shoes without removable insoles Imported.