... entertainment for everyone.2.This non toxic, transparent ball allows you to walk, jump, flip, crawl, roll or just ... use anywhere there is a water supply.FAQQ1: How long do you recommend staying in the walk on water Ball for ... in Summer and 30 minutes in Winter.Q3: How old do I have to be to use the walk on ... contains about 10 times the volume of air of an airbed, and therefore there is no risk of sinking ...