This shower grab bar uses a 2 cup suction system to provide balance support in bathrooms and showers. It is designed to improve steadiness without drilling or fasteners, and it relies on reinforced ABS construction with flexible TPE suction cups that form a vacuum seal. When properly mounted, it can support up to 220 lbs. and resists daily use. For best results, install on smooth, non-porous surfaces such as tile, glass, acrylic, or metal. Do not place on textured, porous, cracked surfaces, grout lines, painted walls, or drywall; only use on tile surfaces larger than 3 by 3 in. The unit is intended solely to aid with balance and should not be relied on to bear full body weight. For safety, check suction strength before each use, reapply if loosened, and reset the suction cups periodically to maintain a strong seal. Installation is quick and tool-free; the 2 suction cups lock in place with latches to secure a firm hold and allow easy removal when needed. It can be used in bathrooms, showers, tubs, toilets, and even kitchens as part of a broader safety setup. The design prioritizes portability and minimal wall impact, making it possible to move between locations as needed. Color: Black. Material: Plastic.