Expand your cargo carrying capacity with the Thule SideKick rooftop cargo carrier. This cargo box has a rugged polyethylene shell that protects your gear while keeping it dry. The cam locking system keeps you belongings safe and secure. This rooftop cargo box mounts securely to any aftermarket and most factory-installed roof racks with horizontal crossbars. The compact design of the Thule SideKick leaves room for other roof mounted accessories, and is the perfect size for camping gear and golf clubs.