The SportRack SR5528 Roof Mount 6-Inch Foam Block Canoe Carrier makes transporting you canoe easy and convenient. This canoe carrier is hassle free and works on most roof racks, including naked roofs, Thule square load bars, round crossbars and most factory bars. The SR5528 features (4) 6-inch foam blocks with non-skid undersides and a sure-grip polyurethane top surface that grips the canoe making transport safer. The foam blocks also feature custom-cut slots that attach to the canoe gunnels. Secure the canoe to your vehicle with the included 15-foot polypropylene center strap with chrome-plated buckles and (2) ropes for bow and stern tie-downs. The SportRack SR5528 Roof Mount 6-Inch Foam Block Canoe Carrier measures 7-inches (L) by 6-inches (H) by 4-inches (W), weighs 1.5-pounds and comes with a limited lifetime warranty. The SportRack is a brand of the Thule Group. Started in Granby, Quebec, Canada in 1980, SportRack’s historical line of “easy- on/easy-off” products has continued to this day. SportRack offers a vast array of multi-sport roof rack systems and accessories, hitch-mounted products, cargo boxes and truck-mounted racks for the active family looking for quality products at a great value. Backed and tested by Thule, a global leader in automotive racks, these products carry a limited lifetime warranty. SportRack – Play Outside!