RoofBag 100% Waterproof Carrier Bundle: Includes Protective Roof Mat + Storage Bag for Storing + Heavy Duty Straps + Cross Country Soft Car Top Carrier - Made in USA Select the WITH rack option for side rails, cross bars, or basket. Select WITHOUT rack for bare roofs (no rack). Comes with everything you need: heavy duty straps (3,000 lbs strong, no extra straps needed) and Protective Mat to protect roof and keep bag steady. Safe and high quality materials, no toxic or harmful chemicals used. Made in USA. Size 11 fits any car, SUV or van. Size 15 fits SUVs, vans and full-size sedans. Easy to store. Easy to install- works on ALL vehicles with or without rack.