Thrill-seekers ride four across on this D-shaped towable tube, whose high backrest and wide sidewalls keep up to 680 lbs of riders aboard through hard turns. The Pvc liner wears a full nylon cover with tight stitching for lasting airtightness, while 22 padded grab handles and 2 boarding straps make holding on and climbing back up easy. Dual tow points let drivers vary the pull angle, and the safety valve speeds inflation before launch.