[Easy roof access] A durable and lightweight car seat. Simply hook it onto the latch for quick access to the roof. You can easily use it to load or mount cargo bags, canoes, kayaks, skis, snowboards, bicycles and to shovel or clean the roof of your car. Stability and safety The step car is made of aluminum and aeronautical alloy for strength to support up to 440 pounds. The extended and thickened platform supports both feet for maximum stability, with a non-slip cubic pattern on the surface and a non-slip pad in the middle of the tread to ensure safety during use. [Anti-scratch rubber rotating gear]. The thick, high-density hexagonal rubber pad prevents damage or crushing the door frame and scratching the car paint from any angle. Thanks to their rotating design, the rubber gears adapt perfectly to the different inclinations of the door frame. [6 adjustable angles and safety hammer]. The lock is designed with 6 adjustable angles to fit most models, front and rear doors. However, metal door hooks with a thickness greater than 13mm are not compatible, please measure the metal thickness before purchasing. Our door sill support is designed with a safety hammer on the end for use in emergency situations. [Foldable and Portable] The step stool is easy to fold and weighs only 1.4 lbs. A storage bag is included in the package and the step stool can be folded and stored in the storage bag. You can store it in your glove box or spare tire compartment.