The silicone cover is suitable for STANLEY All Day Slim Bottle 20 and Stanley AeroLight Transit Bottle 16oz 20oz. It is precisely made according to the size of the original cup, fits perfectly to the bottom of the cup and will not fall off easily. Protecting your water bottle from scratches, bumps and dents can provide long-lasting protection for your bottle and extend the life of your water bottle. This Silicone Boot for is made of high-quality silicone material, which is easy to clean and dishwasher safe for added convenience. This silicone sleeve compatible with STANLEY All Day Slim Bottle and Stanley AeroLight Transit Bottle can effectively protect the bottle bottom from dents, scratches, slipping and noise. It is strong and built to last, providing long-lasting protection for your bottle. A variety of colors are available to meet different preferences, you can choose the same color as your bottle or a different color to create your own scheme the way you want, Mix and match to customize your colorful look, allowing you to match as you like. The silicone sleeve is designed to be compatible with the STANLEY All Day Slim Bottle and the Stanley AeroLight Transit Bottle, ensuring a snug fit.