RoofBag 100% Waterproof | Made in USA | Premium Triple Seal for Maximum Protection | 2 Year Warranty | Fits All Cars: with Side Rails, Cross Bars or No Rack | Roof Bag Includes Heavy Duty Straps RoofBag Premium carriers are 100% waterproof, made with heavy duty canvas coated on both sides with abrasion-resistant waterproof vinyl using Triple-Seal technology. Maximum protection against extreme weather. 2-year warranty. Manufactured by RoofBag in the USA with the safest and highest-quality materials: no toxic or harmful chemicals used. Size 11 fits ALL cars. Size 15 fits full size cars. Select FOR RACK for cars with side rails, cross bars, or baskets. Select NO RACK for vehicles with a bare roof. Includes heavy duty straps (3,000 lbs strong). Straps are made with ANTI-WICK technology to prevent water entry into vehicle in cars without rack. Easy installation: FOR RACK: straps attach to side rails or cross bars or basket. NO RACK: straps loop from top of bag through inside of car; doors close over straps. Straps don't interfere with door seal or window or side curtain bags. 1-year warranty.