Product Name: Water Bottle Bottom Cover Silicone Black 8cm Color: Black Size: 8cm (Bottom Diameter Guide) * Please check the bottom size of your water bottle before purchasing. Set Contents: ・Silicone Bottom Cover * Water bottle not included Product Description: Simply attach it to the bottom of your water bottle or tumbler for: ✔ Bottom scratch prevention ✔ Anti-slip ✔ Noise reduction when placed down Easy to install with silicone material. Compatible with Thermos, Zojirushi, Tiger, etc., if the bottom diameter matches. Notes: ・May not fit depending on the shape and material of the water bottle. ・Returns due to incorrect size are not accepted. Instant purchase OK. I have other items for sale, so please take a look at my profile. Thank you.