The OXO Tot Tub Drain Stopper keeps water in the tub during bath time. Soft, flexible silicone makes it safe for little fingers, and a suction cup secures the Stopper to the tub floor with a water-tight seal, keeping water (and toys) from escaping down the drain. When the Stopper is not in use, the suction cup is convenient for storing the Stopper on the wall.