TIROL Auto Air Inflatable Roof Rack Cargo Carrier Top Roof Rack Pads for Kayak Luggage Carrier Paddleboard Holder with Patent Handy Self Inflatable roof rack for transporting sports gear, furniture, and more. Attention: Do not use in cars with side air bag & antenna. Material: Nyon and EVA foam. Accessories: extra straps(2x3.1 meters) and 2 pieces rubber protector from scratches. Patent Car & Go Air Rack, Installs on nearly all vehicles; Load Bearing: Up tp 80kgs. Features: Self inflate, easy to pack and fit straight onto your car. Carry on the Kayak, Canoe, Surfboard, Snowboard, Luggage box, Ladder, furniture, etc. Open your doors of car, let air roof rack body lie on the roof. Then use the strap through the car door to fix with the zinc-buckle (picture). Tighten the strap make sure it is tight picture B Unscrew the valve (picture C) until the air roof rack body expanded (picture D) around 5 mins, then screw down the valve. (Picture E) you also choose to blow inflatable by the valve. Let the duty strap through the metal ring on the strap. Kayak or ladder put onto the air roof rack body, then poll tight it by the duty strap (picture F,G)