1. It is made of high-quality ABS material, strong and durable, and has a load capacity of 7.5 kg/16.5 pounds, which has stronger adsorption capacity than traditional suction cups. The suction cup has a vacuum locking ring that can effectively prevent the suction cup from releasing air pressure due to tension and tightly locks the vacuum. Note: The weight must not exceed the load capacity of 15 kg, otherwise it will fall down. 2. The sturdy plastic handle does not slip thanks to its underside, even when wet, and offers safe protection for baths, bathtubs and showers. Note: Do not use force or tear the handle. The part marked \"OPEN\" and \"CLOSE\" above the rotating suction cup. Clockwise rotation is the locked position, i.e. the \"closed\" position. 3. Strong suction cup handles, wall-mounted suction cup handles for shower rooms, sliding door handles and strong suction cups for toilets and bathrooms, suction cups for drawer handles on refrigerator doors, glass door cabinets, door handles glued under pressure, bathroom handles, suction cup handles for showers. 4. Easy to install and uninstall, no tools are needed for installation and removal. It is light and compact so you can take it with you when traveling and easily install it in a hotel room or bathroom and carry it with you when needed. Just press down the locking tab to secure the turn. The armrest can be firmly attached to any flat, non-porous surface. 5. Portable bracket handle, the vacuum pressure of the suction cup provides super grip, more convenient for opening sliding doors/windows. Can be used on all flat surfaces without holes. It can only be installed on all smooth, flat surfaces, including tiles, glass, metal, plastic, etc. Please note: Do not use on uneven or rough surfaces! ! !