Made of high quality ABS material, durable. Ensure quality and longevity, light and heavy, and the adsorption film has memory. When changing the installation position, you only need to clean the suction cup under running water. After drying, the suction cup can be used again. Easy to install and uninstall, no need to use tools to install and remove. It is lightweight and compact, so you can take it with you when you travel and easily install it in a hotel room or guest room bathroom, and carry it as needed, just push the locking latch down to secure the Flip up. The armrest can be firmly fixed on any flat and non-porous surface. Its load capacity is as high as 7.5 kg / 16.5 lbs, which has a capacity of stronger adsorption than traditional cupping. The suction cup has a vacuum lock ring, which can effectively prevent the suction cup from releasing air pressure due to tension, and firmly lock the vacuum. Note: Do not force the handle to rotate or tear. The part marked "OPEN" and "CLOSE" above the rotary suction cup. Clockwise rotation is the locked state, that is, the "closed" state. Strong suction cup handles, wall-mounted suction cup handrails for rooms sliding door handles and strong suction cups for toilets and bathrooms, suction cups for refrigerator door drawer cabinet handles, glass door cabinets, pressure glue handles, bathroom handrails, handles suction cup for showers, glass suction cup to open sliding doors/windows. Can be used on any flat surface without holes. It can only be installed on any smooth flat surface, including tile, glass, metal, plastic, etc. Please note: Do not use on rough or uneven surfaces! ! !