Bump-Me® Coupler-Vehicle Cushion – Absorbs the blow between the coupler and the towing vehicle when the hook-up is misjudged. Bump-Me® is held on by friction grip by slipping on the flange of the coupler. Molded with a UV inhibitor, it resists deterioration and stays flexible in all kinds of weather. Fits most brands of Class I-IV couplers. Patented.