MAXIMUM PROTECTION - Durable Mixed Series Silicone Flex Boot extend the life of your bottle ,against unexpected scratches, dents or dings during outdoor indoor. 💧FITS PERFECTLY - Our Silicone boot is specially design for Stanle Adventure Quencher H2.0 40 oz 30 oz 20 oz and Stanle IceFlow 20oz 30oz Tumblers water bottles. (Fits bottom diameter 2.83-3 inch cup Tumblers). Note: this flask sleeve is also ok for Hydro 12-24 oz water bottles. 💧TOP QUALITY - Premium food grade silicone rubber, more stretchy and durable, Anti-Slip,BPA-Free,Safe for all ages. Easy to clean. Easy to put on and take off bottom sleeve from water bottle. 💧CUSTOMIZE YOUR BOTTLE PROTECTION - WUQID uniquely design Mixed Series various color bottom boot, Mixed Series boot not only let your bottle show your temperament more but also provide your bottle better slip-resistant and cushioning effect. NWT Smoke and pet free home