A. Suitable for sealing and made of 100% food grade silicone: The bathtub stopper, crafted from silicone material, can seal sinks or bathtubs effectively with minimal leakage. It is made of 100% food grade silicone to ensure safety for children, free from harmful metals or plastics (BPA safe). Please note that it is only suitable for flat smooth surfaces. B. Easy to use: Before filling the tub or sink with water, use the tub stopper to cover the drain hole, and remove it after use. This easy operation saves effort. Additionally, the suction cup design is convenient for storage when the stopper is not in use. C. Long-lasting sealing: The shower bath drain stopper can maintain a seal throughout the night without significant water leakage. D. Universal size: One size is designed to fit various uses, with a secure snug fit and good grip suitable for kitchens, bathrooms, laundry rooms, utility rooms, and Jacuzzi tubs. Tired of dealing with hard-to-pull or dirty plugs? If you are still using original metal stoppers or inexpensive plastic stoppers, you may consider replacing them with our WSZCML silicone bathtub stoppers. They are big, round, and flat, making them easier to work with different size holes in tubs, bathtubs, kitchen sinks, etc. Being silicone, they are less likely to slip around compared to cheap plastic stoppers. The super slim and flat design allows for effective sealing with no leakage. These stoppers cover the drain and stop water flow easily, enabling you to use the water for evening cleaning routines. They have good suction but are easy to remove—simply slip a finger under the side, which adds a bit of complexity for children. Dislike unpleasant smells from the drain? Use our tub drain cover to seal the shower drain when not in use to prevent such smells. It is also suitable for travel, especially useful in foreign countries where sink stoppers often do not work well, making clothes washing challenging.