From Vionic, the Active Full Insoles feature: Received APMA Seal of Acceptance EVA orthotic with re-enforced, hardened plastic shell for added motion control & stability Cushioned shock dot in the heel for added shock absorption Contoured around the heel & arch areas to achieve complete foot contact Designed with trim marking for a custom fit if necessary. See packaging instructions for more details Fresh antimicrobial and Odorban™ anti-odor top cloth Contoured around the heel and arch areas to achieve maximum foot contact For best results, it is recommended that you replace your orthotics every 6-8 months Imported.