From company website: The men's Hayden open toe sandal with multi-option fastening is inspired by the groundbreaking cultural phenomenon of the early 90s: grunge. It's a modern interpretation of the classic Fisherman sandal — and still serves up all the classic Docs DNA. -Fully adjustable with two straps: over the toe with a hook-and-loop strap, or buckled over the ankle -All the classic Docs DNA, like grooved edges, visible stitching and a scripted heel-loop -Padded ankle for extra comfort -Made with Grizzly, a heavyweight leather with a subtle grained finish that only gets better with time -Constructed on the comfortable and iconic air-cushioned sole -Built to last with a durable Goodyear welt