No More Embarrassment = When you are in a quiet working environment, are you embarrassed by your sudden metal collision Silicone protective sleeve for stanley 40 oz tumbler with handle can easily solve your embarrassment. Better Protection = This protective silicone cover compatible with stanley 40 oz tumbler with handle, stanley 30 oz tumbler with handle, stanley iceflow flip straw tumbler 30&20 oz and simple modern 40 oz tumbler which can effectively protect the bottom of the bottle from depression, scratch, skid resistance and noise. Prolong the service life of your stanley cups. Strictly Selected Materials = Made from soft and flexible silicone rubber, these for stanley boot sleeve are BPA-free, food-grade, odor-free, reusable, durable and safe for everyday use with your stanley tumblers. Compatibility = The protective silicone boot is specially design for stanley quencher 40oz 30oz tumbler with handle(fit H1.0&H2.0), stanley iceflow 20oz & 30oz tumblers and simple modern stainless steel 40 oz tumbler. They will greatly extend the service life of your tumbler and greatly reduce the metal collision sound. (They are also fit other brands of water bottle bottoms, please pay attention to the diameter of the boot to see if it will fit!) Package Including = You will receive 2* water bottle protector for stanley water bottle. If you are not satisfied with our products or have quality problems, please contact us and we will provide kindly service.