【Universal Fit】This silicone boot is designed for Stanley’s popular tumblers. Works with All Major Brands & Sizes. Fits Stanley Quencher 30/40oz & IceFlow 20/30oz – Compatible with Hydro Flask (12, 16, 18, 20,24oz), Owala Tumbler 24/40 oz,YETI (10/20/30oz) and HydroJug Sport 20 oz. One boot for all your 2.8-2.95" Bottom Diameter Range bottles–Snug, non-slip fit on most wide-mouth tumblers 【Effective Noise Reduction & Superior Protection】Silent cushion design - Soft silicone absorbs impact, eliminating loud "clanks" on hard surfaces. Shock-absorbing- Stanley cup boot provides real drop protection. Anti-slip grip - Stays firmly in place on tables and car cup holders. Ideal for quiet spaces - Perfect for offices, libraries and nurseries 【Safe and BPA - Free Material】 These boots suitable for Stanley 40oz is Made of food grade silicone material, BPA-free ,We prioritize your health 【Stylish Meets Protection】：Not only does it offer practical functions, but the trendy leopard - print design also adds a touch of style to your bottle.DIY your cup with this leopard silicone boot. Elevate Your Tumbler's Style with This Fashion-Forward Protective Sleeve! 【Quick response】 Before purchasing, please confirm the size of the tumbler's bottom,If you are unsure if it is a match or have any questions about the products you receive, please feel free to contact Prurex to ensure a pleasant experience Silicone Boot for Stanley