Flex Adhesive Double Hook includes non-damaging, waterproof adhesive strips that can be applied on various surfaces such as tiles, drywall, concrete, etc. (does not work on porous surfaces). Measures 3.13 x 2.25 x 3.13" (8 x 6 x 8 cm). Part of Umbra's Flex Adhesive Bath Collection. ?? Made from 90% recycled plastic.Surfaces must be smooth and clean for mounting. Warning: Surface damage may occur if adhesive mounting is removed from drywall, concrete, wallpaper, and porous surfaces.-Keep your small bath necessities elevated and easy to access with Flex Adhesive Double Hook. This storage hook is made of durable plastic, so it's easy to clean, and you'll never have to worry about it rusting. Easy to install, Flex Adhesive Double Hook includes non-damaging, waterproof adhesive strips that can be applied on various surfaces such as tiles, drywall, concrete, etc. (does not work on porous surfaces). Flex Adhesive Double Hook is great for slim shower stalls where storage is limited. One simple hook can make a big difference by providing access to the items you need in the shower. Made to hang two loofahs or washcloths, or a razor, it can also be used on the reverse side of a smooth glass shower stall to hang larger towels, a bathrobe, etc. Measures 3.13 x 2.25 x 3.13" (8 x 6 x 8 cm). Part of Umbra's Flex Adhesive Bath Collection. ?? Made from 90% recycled plastic. ? Non-Damaging Adhesive Installation: Completely non-damaging to your tiled walls. Includes a strong adhesive backing that can be applied on various surfaces such as tiles, drywall, concrete, etc. Surfaces must be smooth and clean for mounting. Warning: Surface damage may occur if adhesive mounting is removed from drywall, concrete, wallpaper, and porous surfaces.