Perfect CompatibilityOur water bottle bag is specifically designed for the Stanley Quencher H2.0 Flowstate Tumbler 30 oz 40 oz with Handle. It provides a snug fit and features fine stitching, making your Stanley Tumbler even more stylish. Multi-functional DesignThe detachable and adjustable shoulder strap is soft and padded, allowing for easy adjustment between 27.5 in and 50 in to fit most body sizes. You can use it as a shoulder bag or handbag and effortlessly detach the strap when not needed. Hygienic DesignSay goodbye to dirty straws and enjoy a more hygienic drinking experience. The included BPA-free silicone straw covers, fits perfectly with your Stanley Tumbler and keeps the straw clean and free from dirt. Food-grade silicone material is safe for people of all ages and is the ideal choice for children and adults. Premium MaterialThe water bottle holder is made of high-quality neoprene material, offering excellent waterproofing, shock absorption, softness, lightweight, and comfortable. It protects your bottle from scratches and scrapes, can be easily cleaned (machine washable), and will never fade. Widely UseThe water bottle sling holder comes with a locking carabiner and a silicone straw covers cap. Moreover, the hook-and-loop design of the water bottle holder enables quick and secure installation of the Standly cup. It is perfect for outdoor activities like hiking, walking, camping, and the gym.