WOW Sports Big Bubba 1 or 2 Persons Inflatable Towable Tube for Boating B01MG754YN The Ultimate Boat Tube – The Bubba couch-style boat tubes and towables are crafted for the ultimate water fun! The flat base of the tube contributes to the smooth ride over the water and minimal drag on the boat. Towable Tubes for Boating with Secure Deck Setting – The secure deck setting on the Bubba towable tube comes with a super-high backrest with sidewalls to protect your kids and give them a feeling of safety while on the towable tube. No warranty