Better Protection - Still worried about broken, scratched bottom of the stainless steel water bottles? or embarrassed by the bottle's nosiy clanking on counters or tables? This silicone boot for stanley 40 oz quencher can protect your cup from collision, scratches, and will not make a noise when placing it on the table! Perfect fit - This stanley boot is suitable for Stanley Quincher Adventure 40oz Tumbler with Handle, Quencher H2.0 & Stanley IceFlow 20oz 30oz. It is precisely molded according to the size of Stanley cups, which perfectly fits the cup bottom and won't fall off easily. Safe material - This bottom cover is made of food-grade silicone, soft, flexible and durable. Safe for all ages. Dishwasher safe. Easy to use - The proper elasticity of this silicone boot makes it very easy to put on and take off. Just hold the tumbler, gently put the silicone boot on the bottom, and squeeze out the air. And it won't be as sticky as some silicone cup covers when taking off. Perfect for gift giving - you will get 2 pieces cup boot. 1 for yourself, and 1 for family, friends, or for spare. Protect your water bottles at school, outdoors, fitness, home, office, or anywhere else. Suitable both for the elderly, adults and children. Perfect water bottle accessories for stanley tumblers, and the first choice for holiday gifts! color:As shown Material:Silica gel size:4 x 7.6cm Package Contents: 2 x Silicone Case Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.