Rightline Gear 100S10 Sport 1 Car Top Carrier, 12 cu ft, Waterproof, Attaches With or Without Roof Rack Capacity: 12 cu ft., Dimensions: 38" L x 34" W x 14-19" H Aerodynamically designed for crossovers, wagons, and sedans (can be used on larger vehicles), WITH or WITHOUT a roof rack Attach the carrier's straps to a vehicles roof rack or use the Car Clips to attach the straps to a vehicle's door frame weather molding 100% Waterproof with Dual Seam Technology (sewn for strength/welded waterproof) and ZipRight System (a urethane coated zipper located on the protective zipper flap where water cannot enter) Includes: carrier, (4) attachment straps, (4) car clips, and stuff sack with sewn-in set up guide