Our beach volleyball design team is proud to offer this ball that is perfect for intense training sessions and matches. Our beach volleyball design team is proud to offer this ball that is perfect for intense training sessions and matches. ball touch A soft, grippy component for pleasant, controlled contact. Durability Hand-sewn polyurethane cover gives the ball excellent durability. Lasting air retention The high-performance bladder made of 80% butyl provides long-lasting inflation. Waterproof Limits absorption of water to up to 15% of the ball's initial weight.