PERFECT FIT: This size snag fit on the 32 and 40 oz bottles.PREMIUM PROTECTION: Protective silicone sleeve, advanced shock absorbing silicone material helps protect against dent, scratch and damage from daily use.SAFE MATERIAL: Made with premium silicone rubber, BPA-Free and Toxin-Free, safe for all ages.MUST-HAVE ACCESSORY: Ideal for all outdoor activities, and durable for any surface to fully protect your bottles.US SELLER, Faster Delivery, Better Service. Buy American, hire American!Please support US SELLLERS!!!Product DescriptionSilicone protective boots sleeve for hydro flaskProtective Silicone Bottle Boot/Sleeve. Hydro Flask Compatible, BPA Free Anti-Slip Bottom Cover Cap Stainless Steel Water Bottle, Dishwasher Safe.hydro flask flex boots silicone protective sleeveProtective Silicone Boots Design for Hydro Flask and Other Insulated Water BottleAdvanced shock absorbing silicone material helps protect against dent, scratch and damage from daily use.Two Sizes for All Your Hydro Flask Bottleshydro flask flex bootshydro flask flex boots Large size boot fits 32oz and 40oz bottlesDiameter: 3.54 inchHeight: 1.97 inch Large size boot fits 32oz and 40oz bottlesDiameter: 3.54 inchHeight: 1.97 inch Large size boot fits 32oz and 40oz bottlesDiameter: 3.54 inchHeight: 1.97 inch Large size boot fits 32oz and 40oz bottlesDiameter: 3.54 inchHeight: 1.97 inch Large size boot fits 32oz and 40oz bottlesDiameter: 3.54 inchHeight: 1.97 inch