... , FRP, TPU 1.0mmLoad weight: 200kg Advantages of New Water Roller BallNo.1: No inflatable Old water roller ... the whole roller can't use any more. The new roller ball has two plastic(PE) wheel, connected ... not have the feeling with the water. The new roller only has a single material, players will have the ... 's repaired, maybe it still leak air. The new roller ball is easy replaceable, the two PE wheels ...