[Easy Roof Access] A durable and lightweight car seat. Just hook it on the latch for quick access to the roof. You can easily use it to load or mount cargo bags, canoes, kayaks, skis, snowboards, bikes and to shovel/clean the roof of your car. Stability and safety The car step is made of aluminum and aircraft alloy for strength that can hold up to 440 pounds. The extended and thickened platform supports both feet for maximum stability, with a non-slip cube pattern on the surface and a non-slip pad in the middle of the tread to ensure safety when using. [Anti-scratch rubber rotating gear]. High-density thickened 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 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 thicker than 13mm are not compatible, please measure the thickness of the metal 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 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 compartment or in the spare wheel compartment.