2-inch-wide adjustable straps secure tubes to boat. Straps can attach to boat with 3.24-inch suction cups. Straps also attach to boat with looped stretch cords. Safely secure your towable tubes with a Tube Keeper! These handy adjustable two-inch-wide straps secure tubes to your boat's stern for safety and convenience and tighten for a secure hold. Straps attach around the tube's handles and then attach to your boat with either the giant 3.25-inch suction cups or the stretch cords which can be looped around a cleat or rail. The straps are adjustable in length for a perfect fit. Prevent injuries and save space with this excellent accessory!