We recommend cockpit tubes like Airhead MACH 1 for young riders, since they feel very secure inside. The MACH 1 towable tube provides a wild but stable ride for all ages including young children, teens and adults. Comfort is guaranteed by the inflated floor and deluxe handles with neoprene knuckle guards. The heavy gauge PVC bladder and durable double-stitched nylon cover ensure years of service. Equipped with a Boston Valve and Kwik-Connect for quick and easy inflating, deflating and rope hook-ups. 68 in. x 50 in.