Long, narrow and sleek, Yakima's huge SkyBox Pro 21 safely totes a ton of your gear. It sports a rugged and spacious design and a smooth, aerodynamic profile. The stiff lid is super easy to open and close with one hand from either side of your vehicle. Once your gear is in, the gear-management net and cargo pad secure and protect your stuff during travel. Plus, with no-assembly, rapid-fire mounting hardware it's easy to get this box on or off almost any crossbars. The universal mounting hardware fits round and square crossbars, plus many factory racks, too.