Rooftop Cargo Carrier Bag / Car Top Waterproof Luggage Soft Pack Including 2 Extra Tie Down Straps (Black) Waterproof rooftop cargo bag. Dimensions: 44" x 34" x 17" Adds 15 cubic feet of storage space for road trips Durable construction protects against rain, wind and sun Attaches to the side bars of your vehicle's roof Included: Two tie-down straps for your camping and travel needs