China professional supplier of water roller 1.size: 3.2Lx3m Dia 2.material:TPU Inflatable water zorb Zorb Ball is the sport of rolling down a hill or grass plot inside a giant inflatable ball. Its great for using down local hills, parks, play areas, football pitches and Zorbing Ramp, Zorb Ball also named Hill Ball, Inflatable grass plot ball, Inflatable roller ball, land ball, Inflatable human ...