If you are looking for a Belly Bottle Cap Spill Proof Plug with reliable material, I will tell you that our spill proof stopper will be your practical choice. It adopts silicone material, can keep it for longtime. You can use the stopper with confidence, very useful and leakproof. Features - Color: White -Material:Silicone - Size: 2.50X2.50X0.80cm/0.98X0.98X0.31in -Small round part diameter: About 7mm - The spill stopper is a and that is designed to prevent water leakage effectively. - It that there is no water seepage when the cup is inverted, providing a secure and leak-proof experience. - Easy to clean and maintain, thanks to its replaceable plug that can be easily removed and replaced. - The plug also enhances the overall user experience, as it allows for convenient maintenance and long-lasting functionality. - The practical spills stopper, which further enhances its ability to prevent water leakage and provides added protection against spills. Package list: 6 x stoppers