Shurtrax CLW0056 LW-0056 All Weather Traction Aid for Full Size Pickup Trucks/SUVs Safely adds handling, traction control and traction weight over the rear axle Brass grommet tie-downs allow for safe, secure weight Durability ensured with 25 millimeter thick outer chamber, UV-resistant vinyl, woven nylon mesh reinforcement Tested to support up to 500 pounds of cargo Includes three year "no hassle" warranty against defects in material or workmanship