Essential Accessories: KTKUDY silicone boot is compatible with Stanley tumblers and fits Hydro Flask, protecting your valuable cups from scratches and dents. These boots shield the bottom from damage, ensuring lasting durability & a pristine condition Perfect Fit: KTKUDY silicone boot fits Stanley Adventure Quencher Travel Tumblers (20 oz, 30 oz, 40 oz), fits Stanley H2.0 FlowState (30 oz, 40 oz) with handle, and fits Stanley IceFlow Tumblers (20 oz, 30 oz) KTKUDY silicone boot is compatible with Hydro Flask water bottles (24 oz, 21 oz, 20 oz, 18 oz, 16 oz, 12 oz), 35/40 oz Travel Tumbler, and fits Simple Modern 30/40 oz Tumbler, 20/24/28 oz Classic & 14/18/22 oz Summit & 20/24 oz Ascent water bottles KTKUDY silicone boot is also compatible with Owala 40 oz stainless steel tumbler, fits Owala FreeSip Twist or Flip 19 oz, KTKUDY boot compatible with YETI Rambler 20/30 oz Travel Mug & Tumbler, and fits YETI Rambler 12/18/26 oz water bottles Noise Reduction: KTKUDY silicone bumper boot eliminates clanking with your cup, providing a stable grip on surfaces and reducing noise when setting down. Enjoy peace and stability in every sip Trusted Quality - Our water bottle boot cover, crafted from food-grade silicone, ensures a BPA-free, non-toxic, and odorless experience. Easily cleaned, these cup bottom protectors boot keep your tumblers and flasks secure and damage-free Perfect Gift Option: KTKUDY silicone cup boot is specially designed to be compatible with select Stanley cups and suitable for Hydro Flask, making it an ideal gift for friends and family who love outdoor adventures or sports Ultimate Protection: Preserve your cherished cups with our top-notch boot cover, designed to prevent enamel chipping at the base. Extend the lifespan of your expensive tumblers and water bottles Protect Your Investment: High-quality tumblers and bottles are an investment, and no one wants to damage something they've spent so much on. A must-have for your favorite drinkware, this silicone bumper is easy to apply and fits snugly. These cup bottom protectors not only shield the base of your valuable tumblers and bottles from scratches, dents, and damage but also safeguard your furniture from scuffs. Enjoy quieter use without clinking sounds, and benefit from a secure grip that reduces the chance of spills. Your metal tumblers are always making loud clanking sounds when you put them down on the counter or table, which can be a big deal with a sleeping baby in the house, or even just when you get tired of hearing all that clanking. No more issues with putting them down with this silicone bumper boot on your tumbler. Have you heard of people having issues with their matte cups chipping easily? these silicone rubber boots help protect them and make your water bottle last even longer and keep the paint on them in better shape. Especially when you’re plopping it down in the cup holder in the car or at the gym.