The Phoebe features smooth uppers with Velcro® straps. Plus Fitting System® 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. (VELCRO® is a registered trademark of VELCRO® Industries B.V.).Additional InfoArthritis,Bunions,Flat Feet,Metatarsalgia,Plantar Fasciitis,Orthotics