The Zong allows for free-heel convenience while keeping your forefoot firmly engaged in the mission at hand. Wrap-around toe loop does not pull straight back between the toes. Chaco's original pull-through strap system gives you total adjustability over the middle of the foot while your heel enjoys total liberation. Slip on functionality for easy get-up-and-go. Features and adjustable strap for the perfect fit. Broad heel cup accommodates a variety of widths. Chaco BioCentric contoured footbed provides the support and confort you've come to expect. Sleek polyurethane footbed provides ultimate shock absorption while being light and flexible. Vibram non-marking soles are durable, slip-resistant and resoleable. Chaco's original pull-through strap system gives you total adjustability over the middle of the foot while your heel enjoys total liberation. Slip on functionality for easy get-up-and-go. Features an adjustable strap for the perfect fit. Broad heel cup accommodates a variety of widths. Chaco BioCentric contoured footbed provides the support and confort you've come to expect. Sleek polyurethane footbed provides ultimate shock absorption while being light and flexible. Vibram non-marking soles are durable, slip-resistant and resoleable. This shoe is vegan/vegetarian friendly.