OXO Good Grips Suction Shower Hook. Features : Securely holds loofahs, Hand towels, razors and more. Silicone coating on hooks grip items to prevent them from falling. Secures to walls using a sturdy, phthalate-free StrongHold suction cup. Lever-activated StrongHold suction cup makes for simple, tool-free installation. 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.. The OXO Better Guarantee: If you experience an issue with your OXO product, get in touch with us for a repair or replacement. We're grateful for the opportunity to learn from your experience, and we'll make it better.