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 bathroom, and carry it around as needed, just push the locking latch down attach the Flip up. The armrest can be firmly attached to any flat, non-porous surface. Its load capacity is as high as 7.5 kg / 16.5 lbs. The suction cup has a vacuum lock ring, which can effectively prevent the suction cup from releasing air pressure due to tension and lock the vacuum tightly. Note: The part marked "OPEN" and "CLOSE" above the rotary suction cup. Clockwise rotation is the locked state. Strong suction cup handles, wall mounted suction cup handrails for shower rooms, sliding door handles and strong suction cups for toilets and bathrooms, suction cups for refrigerator door drawer cabinet handles, glass door cabinets, pressurized glue handles, bathroom handrails, suction cup handles for showers, glass suction cup Portable bracket handle, the vacuum pressure of the suction cup provides super grip, more convenient to open the 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. note: do not use on rough or uneven surfaces! ! !