MAIN FUNCTION - This bathtub overflow cover allows you to safely and easily increase the depth of the bathroom, and effectively sealed to fill the bathtub with water. With this bathtub drain cover, enjoy the most relaxing bath in life . EASY TO USE - Simply ensure the overflow hole is located at the top (very important) and securely fix the 12 suction cups around your baths overflow drain. If the water level gets too high the hole at the top of the cover will prevent your bath from overfilling. . SUCTION CUP DESIGN - A small suction cup helps it to adsorb and prevent moving. Firm hold through 12 strong suction buttons on every smooth surface. It is the perfect accessory to create a deeper, more relaxing bathing experience at home. . EASY TO CLEAN - The drain cover is made of soft flexible PVC, durable, recyclable, and easy to clean, just rinse and air dry or throw it into the top rack of the washing machine. . ANTIBACTERIAL DESIGN - The cover has antibacterial effect, which can resist mold and mildew even if it is used for a long time. It also can always maintain a sanitary bathtub. .