This glass cup covers silicone rings is perfect for keeping your drinks hot or cold for longer periods of time. The bottle lid sealing ring ensures better insulation, the silicone rings prevent leaks and spills. The silicone bottle lid sealing ring prevents water from seeping through. Features - Color: White -Material:Silicone - Size: 6.80X6.80X0.20cm/2.67X2.67X0.08in -The leakproof silicone ring design ensures a spillproof experience, making it perfect for traveling use. -Made with silicone, this bottle lid sealing ring is durable and easy to clean, ensuring use. -The silicone ring prevents water seepage and damage, making it a reliable choice for everyday use. -This multifunctional lid sealing ring prevents spills, making it perfect for your daily using, convenient. -The silicone ring is flexible and can easily fit your bottle lid well, you can install this sealing ring easily. Package list: 4 x lid sealing rings