The Coop Hydro Volleyball is an 8.5" official size volleyball ball that just happens to be wearing its own wetsuit! This recreational volleyball ball is 100% waterproof for play in all conditions, including the pool and at the beach. Bump, set and spike without fear, the soft cover makes contact with skin virtually stingless, and the signature on-trend COOP patterns and colors make waves in and out of the water. Floats for easy retrieval during gameplay and will not absorb water. Heavy-duty stitching and durable air retention bladder provide consistent performance.