Features:1. Compatibility: The protective silicone boot is specially design for 40oz glass with a handle, for Quencher H2.0 and 20oz, 30oz tumblers. They will greatly extend the service life of your tumbler.2. No More Embarrassment: When you are in a quiet working environment, are you embarrassed by your sudden metal collision? Silicone protective sleeve for Stanleys cup can easily solve your embarrassment.3. Better Protection: This bottom silicone sleeve cover which can effectively protect the bottom of the bottle from depression, scratch, skid resistance, and noise. Prolong the service life of your tumbler.4. Strictly Selected Material: Made from soft and flexible silicone, these protective silicone boots are BPA-free, odor-free, reusable, durable, and safe for everyday use with your tumblers.5. Not Easy To Drop: water bottle bottom sleeve is precisely shaped according to the size of the Stanleys Cup, fits the bottom of the cup perfectly, and will not fall off easily.Specification:Material: Silicone Product Color: Multicolor Product Size: 7.5 x 4.5cm Product Weight: 35g Package Included:1 x Protector Silicone Boot