The Thule 846 Quest Cargo Bag attaches to aftermarket racks including both Thule Racks and Yakima Racks, as well as factory installed car roof racks. The Thule 846 Quest Roof Bags offer the capacity and quality of a roof box, but are more convenient. Attaches to aftermarket and factory installed roof racks. Modern styling makes this a perfect fit for any car on the road. Packaged in its own stuff sack for easy transport and storage. Storm flaps with Velcro fasteners. Easy bag handling with integrated heavy-duty molded handles. Durable 600 Denier material construction. Provides 13 cubic feet of cargo capacity. Dimensions: 40 in. length x 32 in. width x 18 in. height