The Phoebe features smooth uppers with hook and loop fasteners. 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.