Waboba Water Ball This awesome ball bounces on water & makes the perfect addition to any beach holiday! For use in swimming pools or the sea, it is great for a game of catch, whether playing with children or adults. The water balls measure around 5.5 cm x 5.5 cm & are available in various colours. We cannot guarantee what colour ball you will get. These make superb Birthday gifts for teenagers & stocking fillers for the whole family!