Propet - Ped Walker 2 (Black) - Men's: Extra depth fitting. Hand stitched construction for flexibility. Supple leather/Lycra(R) uppers. Leather lined quarters and tongue. Dual purpose instep or back strap. Removable Poliyou air insoles for moisture and odor absorption enhancing foot comfort. Double removable insoles for additional volume and maximum customization. Polyurethane sole for shock absorption and durability. 1,000 Mile Guarantee on unitsole wear.