IMPORTANT NOTE: This suction cup device must be applied on non-porous, texture-free, flat, and smooth surfaces such as glass, DRY tile, or fiberglass. CAUTION: Shower grab bar must be reattached before each use and cannot support full body weight. Do NOT install over a grout line. Tiles should be 4x4 inches or larger. Tool-Free Installation: Clean and dry both the suction cups and the wall surface. Hold the shower handle and press the suction cups firmly into place. Push them as close to the wall as possible, then fully lock both levers to secure. Powerful Support: Bathroom grab bar provides extra stability when entering or exiting the bathtub or shower for a safe and comfortable experience. Ideal for seniors, disabled individuals, children, and pregnant women. 12-Month Warranty: This product includes a 12-month warranty. If you receive a damaged item or have any concerns, for assistance.