Men's Nunn Bush Rio Brave Three Strap Outdoor Sandals Form and function blend effortlessly in the Nunn Bush Rio Bravo Three Strap River Sandal. This lightweight and durable sandal features an open cell foam footbed that absorbs the pressure of each step and provides all day comfort, while the rubber outsole provides maximum shock absorption. The Rio Bravo's neoprene lining helps to control moisture and the hook-and-loop straps deliver you a custom, yet secure fit so that every step you take is taken in confidence.