The Thule Interstate 869 Roof Cargo Bag rooftop cargo bag lets you free up a little space inside your car. This soft-sided, weather-resistant rooftop accessory is spacious enough to carry your entire family's vacation gear, and tough enough to protect it out there on the open road. The double-coated laminate material is rugged and the padded base protects your car's finish. Heavy-duty, double-stitched straps attach the cargo bag to your roof-rack crossbars or raised factory rails. Twin compression straps keep the load stable, minimize abrasion and noise, and improve aerodynamics. When you've gotten back home the Interstate folds down for compact storage