The OXO Good Grips StrongHold™ Shower Accessory Cup keeps shower essentials like facial cleansing brushes, razers, toothbrushes and beauty samples secure and within reach. The pthalate-free StrongHold™ suction cup activates with a push of a lever, you can easily adjust it with a simple flip. The ventilated base prevents water from pooling and promotes quick drying. 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.