SwimWays Hydro Volleyball Official size volleyball in a waterproof wetsuit The COOP Hydro Volleyball might attract players like a magnet, but its really an official size volleyball that just happens to be wearing its own waterproof wetsuit. This soft neoprene covered volleyball makes contact with skin virtually sting-less, and its splashy colors make waves in and out of the water. 100 waterproof embossed neoprene Official size Ultimate recreational volleyball Virtually no sting during play Heavy