Product Details: Our silicone boot compatible with Stanley Tumbler 40oz 30oz 20oz and other water bottles with base diameter of 2.8-3 inches. Boot size is 2.85 inches in diameter and 1.7 inches high. If your water bottle is not listed in our fit list, please measure the bottom before purchasing. Metallic Matte Luster: Add a luxurious aesthetic to your water bottle with the matte metallic gradient cup sleeve. This sleeve cover boot not only protect your water bottle from noise, dents, and damage, but they also has a comfortable grip, creating a stylish look for your favorite water bottle. Premium Quality: This water bottle boot is made of high-quality food grade silicone, which is more flexible and won/t deform. BPA-free and safe for all age. Easy to use, easy to clean and reusable. If you have any questions about our products, we will try our best to give you a solution. Satisfactory Presents: You can give it as a present to yourself, family, friends or as a spare. Suitable for both adults and children, it is the perfectly tumbler accessories for Stanley cup. Specification Product Name: Silicone Boot Material: Silicone Size: 7.5cm Color: as shown Package included: 1 x Silicone Boot Note: 1. There could be some slight differences in the color tone of the pictures and the actual item. 2. Please allow 1-2mm differs due to manual measurement, thanks. / new and high quality.