Water Walking Balls, Water Spheres, Water Balls are usually made to 2m diameter Round, TPU or PVC material, TIZIP zipper from German. We can do different size as your requirements, 1.5m dia, 1.8m dia, 2.3m dia, 2.5m dia, 3.5m diameter. etc. Adults and children can use it. Widely used for playing center, amusement park, water games, holiday events, swimming pool and seashore scenic spot.