✅Compatible--HEYSKAY silicone boot was specially designed for Stanley Quencher Adventure 40oz 30oz Tumbler & IceFlow 20oz 30oz. Also compatible with Hydro flask Wide Mouth(12/16/18/20/24 oz), Hydro Standard Mouth(18/21/24 oz), Owala flask Twist, Freesip & Flip 24oz. Yeti Rambler Tumbler/Travel Mug(20/30 oz), Simple Modern Tumbler(20/24/28/40 oz), Simple Modern Summit(14/18/22 oz) and Ascent(12/17/20/24 oz), Vmini and other brands water bottle which bottom diameter is 2.83--2.95inch ✅Smart idea--Heyskay offers more colors/designs to choose, it is easier to find your style to pretty up your expensive flask water bottle. And it will protect your flask from scratch and dings, also no noise any more when landing your flask ✅Safe material--Our protective silicone boot for stanley are made of high quality food grade soft silicone material, BPA free, odor-free, feel safe for your daily use ✅Portable to carry--This boot sleeve for stanley cup is reusable, washable and foldable. Our silicone sleeve can withstand stretching, folding, and anything life throws at it 😊SATISFACTION GUARANTEED – Buy with confidence! You are assured to get the products as described and get the quick/easy customer service by wiring or talking to us directly. About HEYSKAY flask silicone boot-BPA free soft silicone material-Fits Hydro flask perfectly and the other brands which diameter is the same as Hydro flask like as Simple, Mira, Yeti (note: a bit tight for Yeti but ok to put on) Bright up your Hydro flask look-No noise any more when landing your flask on desk and protect your flask bottom from damage, smart idea!