KKmoon Waterproof Universal Car Roof Top Cargo Bag Carrier Luggage Storage Travel Bag for SUV Van (15 Cubic Feet ) Made from heavy duty double thickness water resistant material. 15 cubic feet capacity, suitable for most cars, small vans and 4x4's fitted with roof rails. With 4 strong quick release straps for easy fitting. Strong non-slip, anti-scratch foam padded base. Double stitched seams.