inflatable zorb roller 1.Custom design and color 2.Heat welding 3.Certificated material & pump 4.Competitive prices Specifications for quality zorb balls,grass walking balls,water balls,water walking balls,water rollers:(1) Size( meters ): 2.7L x 3.0W , or as per custom size;(2) Material: polyether TPU 0.8mm,or PVC 1.0mm,or as per customized;(3) Hot welding and customized design available;(4) ...