The Athena features the Plus Fitting System with Two Removable Footbed for Added and Double Depth. Removable polyurethane footbed with heel cushion and arch support. Drilex Lining with AEGIS Microbe Shield for Odor and Stain Control. Flared, lightweight rubber outsole with EVA wedge midsole. Soft, foam-padded tongue and collar. Accommodates prescribed orthotics. HCPCS A5500".