This 954mm/37.6â long, full-size, Slimline II cargo roof rack kit contains the Slimline II Tray, Wind Deflector and 2 pairs of Grab-On Feet to mount the Slimline II Tray to the roof rails of your Volkswagen Up Cross. This system installs easily with 4x4 ready feet that grab on to the existing factory/OEM roof rails. No drilling required.