I wore out the similar clarks that had the removeable back strap. I would have liked to replace them with a like pair but these were the closest I could find. The strap over the toes goes through a plastic buckle which is sewn right over the large joint of your big toe. The way the buckle is attached through the leather rubbed the skin off my toe to the point where it caused bleeding. If you wear thick socks with the sandals then they are comfortable enough but that sort of defeats the reason you by sandals in the first place.