【3 Dreamy Gradient Shine】 Each silicone boot is made with a special process, our silicone boot reflect metallic gradient effect with three dreamy colors, and it will change with the angle of view and ambient light. (Note: The color shown in the picture are all front view angle, the actual effect will be changed with the angle changes) Product Details: This chameleon gradient silicone boot are 2.85 inches in diameter and 1.7 inches high. Suitable for water bottles with a base diameter of 2.8-2.3 inches, which can meet most 12-24oz water bottles on the market. If you are unsure, please measure the size of the bottom of your bottle before purchasing.Universal Compatibility: Our protective boot are specifically compatible with Stanley Quencher(30/40oz) H2.0 and Stanley lceFlow (20/30 oz) Tumblers. Also compatible with Hydro Flask Tumbler(30/40oz), Hydro Flask Wide Mouth (12/16/18/20/24 oz), Hydro Flask Standard Mouth (18/21/24 oz), Simple Modern Tumbler (20/24/28/40 oz), Simple Modern Summit (14/18/22 oz), Simple Modern Ascent (12/17/20/24 oz), Vmini Wide Mouth(12/18/24 oz), Vmini Standard Mouth(12/18/22 oz), The Coldest Water(36/46 oz) Tumbler, TLINNA 40 oz Tumbler, Crave Cups 40 oz Tumbler, COKTIK 40 oz Tumbler, BELYQLY 40 oz Tumbler and other water bottles. Silicone boots are available as Stanley cup accessories, Tumbler accessories, etc.Premium Quality: Crafted from food-grade silicone, our water bottle boots are flexible and won't deform. It's BPA-free, odor-free, and safe for users of all ages. Easy to clean and reusable, it's a accessory with long service life. Not only does it protect your bottle from noise, dents, and damage, but it also has a metallic sheen that display multiple colors, creating the stylish appearance of your favorite tumblers.Great Gifts: Gift to yourself, family, and friends, make it unique to your water bottle with our chameleon boot. It's the perfectly water bottle accessories for Stanley Tumbler and others. If you receive a defective or incorrect item, please feel free to contact us, we are committed to providing you with a satisfactory solution.