The SportRack SR7018 Vista XL is a spacious, but aerodynamic rooftop cargo box that provides 18 cubic feet of waterproof storage space atop virtually any roof rack. The angled contours of the box help it to cut quietly through the air when the vehicle is in motion, and its durable ABS plastic construction keeps stowed gear dry, as well as provides resistance to impact strikes, and UV rays. Enjoy endless adventures as a family with this durable cargo box.