STURDY AND DURABLE - The shower handle is made of plastic and the 2 suction cups have strong power and are very sturdy and durable. It won't slip even when wet, providing a comfortable experience on bathroom, tub, shower and toilet grab bars. REMARK: This product works best on flat, non-porous surfaces. Uneven or textured surfaces may prevent the suction cups from holding securely. TIP - The shower handle is suitable for smooth, dry and clean surfaces. Clean and dry surfaces thoroughly before installation to ensure smooth, non-porous surfaces. Regularly check the stability of the suction cups. This handrail is only intended to properly assist and support the person's body, not to support the full weight of the body. Use with caution and test the suction cup suction before use. REMARK: Handrails cannot be installed over grout joints. EASY TO INSTALL - Shower handle is easy to install, no tools, no drilling required. Simply flip the locking latch to hold the rod in place. You can change its position according to your current needs. When properly placed, the armrest will not damage the surface it rests on or leave marks. PORTABLE - The shower handle is portable and compact, so you can carry it take it with you on the go and set it up easily place it in your hotel room or guest bathroom, take it anywhere you go, just press the locking latch to secure it or flip it over to unlock.