The PackRight Sport Jr. is the only car-top carrier designed specifically for compact cars without luggage racks. The included Car Clip Strap Set has two nylon straps with rubber-coated hooks that attach to the vehicle’s doorframe. With the hooks removed, the Sport Jr. can also be used with a luggage rack. This aerodynamically designed carrier is constructed of 600D Hydrotuff, a UV-resistant, waterproof, polyester material. It features a waterproof ZipRight zipper that unzips 3/4 of the way around the bag to provide a large opening for easy packing. Plus, adding the Non-Skid Roof Protection Pad (not included) will help hold the carrier in place.