The Amazing ball that bounces on water. What's next - Water Cricket! Imagine a tennis ball with skipping stone-like agility and you 're halfway there. The Waboba Ball is made of polyurethane and has a special lycra coating. This mix of different materials somehow causes it to bounce and float on water. Waboba Extreme?s ability to bounce high and fast makes it a challenging water sport. The extreme ball is designed for use in any type of water. This ball gets just as much attention on the beaches or in the downtown fountain!