Main function - This bathtub drain stopper is for emptying and saving water. Efficiently wipes the joints to fill the bathtub with water Flexible and soft - The flat stopper made of silicone makes it easy to use for a variety of different areas Food Grade Silicone - Allows tub stopper to mold to uneven or contoured surfaces Low corrosion rate allergens - This sink stopper is hygienic and dishwasher safe. Easy to clean, guaranteed to last and recyclable Suction cup design - A small suction cup helps it absorb and prevent shifting. Also ideal for larger utility and kitchen sinks