Command Damage-Free Hanging, Holds Strongly, Removes Cleanly.The Command Bath Hook with water resistant strips allows you to keep your bathroom organized both inside and outside of the shower. The hook sticks to many surfaces, including glass, mirror, tile, fiberglass, wood and painted surfaces. It adheres firmly and comes off leaving no holes or sticky residue, providing a great alternative to unsightly, unreliable suction cups and damaging screws and nails. Moving the hook for reorganization is as simple as applying a refill, waterproof Command Strip!