IMPORTANT NOTE: This is a suction cup device and this device will not work on a porous surface such as fiberglass. The device must be applied to smooth, flat, non-porous surfaces. It CANNOT be applied over grout lines and will not work on textured surfaces. We also recommend reapplying the grab bar once a week. Cannot support full body weight. STURDY DURABLE: The shower grab bar is made of ABS plastic, 3 suction cups that more strong power than other 2 suction cups item, very sturdy and durable. You wont slip even when the floor is wet, providing comfortable and relieved experience in bathroom, shower, tub and toilet handrail. TOOL-FREE INSTALLATION: The bathroom grab bars is easy to install, no tools required and no drilling needed. Please clean and dry both surfaces of 3 suction cups grab bars and wall, hold the bathroom handle and press suction cups firmly into place, then push them to the wall as near as possible, then lock down both levers completely to secure. The shower handles dont harm the surface its on nor leaves marks when placed right. INSTALL REMOVE EVERYWHERE YOU GO: Our suction grab rails can be installed in the bathtub or shower to make the life of children, the elderly, the injured or the disabled easier. Compact and lightweight for ease in travel install in hotel rooms or guest bathrooms. PERFECT GIFT: Newthinking shower grab bar is ideal gift for seniors, elderly, handicaps and toddlers, showing that you care about their safety. Moreover, it is suitable for everyone who needs an extra support in slippery areas or has a problem with stability.