A water Roller is also made of Clear transparent PVC of 0.8 mm to 1 mm thickness. It is cyclindrical in shape where 2 cyclinders, one inside the other , are held together with strings. The length of a roller varies between 9-12 feet and inner diameter is 6 feet and outer diameter 8 feet. Here safety nets are provided on either side of the roller so that any chance of anyone slipping on to water is negated. 2 airlets are provided on either side to inflate the roller.