Standard size of water walking ball is 3.5 Feet Diameter. Bubble Soccer is available in TPU Material.
TPU is Thermoplastic polyurethane, it is any of a class of polyurethane plastics with many properties, including elasticity, transparency, and resistance to oil, grease and abrasion. Working temprature for this is -30 degree to +50 degree. Tpu is available in Orange green and blue shades.