Slip N' Slide Wave Rider Double - 16ftBring some serious water fun to your garden with the original and best Slip N Slide from Wham O. Invented by upholsterer Robert Carrier while watching his son hose down their slick concrete driveway and then slide down on it, the Slip N Slide was launched to market by Wham O in 1961. The magic water slide quickly became a summer staple and millions have been sold around the world. The iconic Wave Rider Double features two sliding lanes for double the