VIVISKY Stainless Steel Good Grips Strong Hold Suction Basket Shower Caddy with Rotate & Lock Suction Cups (White) 2 strong suction cups prevent slipping for a secure holding on smooth, non-porous surfaces Innovative rotate and lock suction technology allows this product to install without glue or tools Attaches to any smooth non-porous surface such as tile, glass, fiberglass and some metals The griddle which is in the bottom of this caddy can drain water. Durable ABS resin bottom and Stainless Steel provides long lasting quality