FEIFAN Vacuum Suction Soap Dish Holder Bathroom Toilet Soap Saver Case with Rotate & Lock Suction Cups Suction works best on ceramic tile, glass, mirror, granite, stainless steel, acrylic, laminate and any non-porous surface with glossy finish NOTE AGAIN: It Only Wwork On the Glossy Finish Surface Without Any Rough or Gap Re-press the center button until can not see the red ring to hold tightly if the red ring is exposed. The Surface Damage-free Vacuum Suction holder allows for surface removable mounting. PACKAGE : 1 * Soap Disc