With the OXO Stronghold Suction Large Basket, you can conveniently and securely store all your shower essentials. StrongHold suction cups securely attach to glass or any other non-porous surface, and slide to avoid grout lines. No tools are required for installation—simply push the levers to install and flip them up to adjust or remove the basket. Drainage holes prevent water build-up. The large capacity makes it ideal for big families and roommates, and convenient bottle holes in the base allow you to store shampoo, conditioner, and body wash bottles upside down, so not a drop goes to waste. For best results, use on smooth glazed surfaces, mirrors or glass. Not recommended for use with textured or porous surfaces including some stone, acrylic or metal.