... operation,comfotable design key word:Hand boat,Battery Bumper boat,Laser Battery Bumper boat,Water trampoline,Inflatable swimming poolFrame swimming ... commerical purpose business2.Adwanced flueric impeller design,the smaller power coming into the biggest3.the hull is firm and ... The product has the advantages of safety,randomness,interactivity,non-power and small volume. It's the favorite of children, ...