... material & pump 4.Competitive prices Specifications for quality zorb balls, grass walking balls,water balls,water walking balls,water rollers:(1 ... ) Certificated pumps(CE/UL) affiliated;(5) Widely placed in parks,grass gardens,snowy lands,pools,playing centers,and some other amusing ... ;they will bring people much fun;(6) Competitive price. Extreme commercial transparent grass walking ball; zorb orb