Hook & loop, No stains rips or holes smoke free home Plus Fitting System Two removable footbeds for double depth to accommodate prescribed orthotics Removable polyurethane footbed with heel cushion and arch support Drilex® lining with AEGIS Microbe Shield for odor and stain control Buil-in wide, synthetic shank Firm heel counter Flared, lightweight, slip-resistant outsole with rocker bottom EVA wedge midsole