With Sportsstuff's Cooler Caddy, your cooler and its contents can accompany you into a pool, lake or river. Your refreshments will be bobbing with you and your friends, no need to go on land to get a cold drink! Four cup holders keep drinks handy. Tether it to a dock or boat with the convenient molded tether points. It's equipped with a patented Speed Safety Valve for quick inflation and deflation and a self draining bottom.