"The SwimWays COOP Hydro Volleyball is an 8.5"" official-size volleyball 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 skin contact virtually stingless, and the signature on-trend COOP patterns and colors make waves in and out of the water. This waterproof volleyball also floats for easy retrieval during gameplay and will not absorb water. Heavy-duty stitching and a durable air-retention bladder provide consistent performance. For ages 5 and older. Durable, 100% waterproof cover Virtually sting-proof, making it a great choice for kids or beginners Regulation size Heavy-duty stitching and durable air-retention bladder"