Se numesc "water ball"
http://www.made-in-china.com/cs/hot-china-products/Water_Ball.html
Cred că-s WaterBall
Uite aici: http://www.smuff.ro/2010/04/29/waterball-ameteala-de-vara-mergi-pe-apa
Http://www.bubblexl.com/english/climb-in-balloons/climb-in-balloon.html.Ai aici ceva de genu':)Funda?