Protective Silicone Sleeve Boot Fits the 32oz 40oz Hydro Flask and ThermoFlask water bottles. The silicone used is high quality BPA free, safe for pets and kitchen use. Hike with pets? Simply remove boot from Hydro Flask and fill with water or treats for pets during or after adventure. Our Colorado, U.S. based research & development team diligently design each product to be better than the rest. Take comfort in purchasing a quality brand that will outlast the greatest adventures. Our product will help to dampen sound on granite or hard surface countertops ensuring the best protection is offered. The ARGO brand is a U.S. veteran owned company founded in Colorado, USA. ARGO strives to produce a superior product to all the others on the market, so we offer a full refund with return of item if not happy with our products. Please visit our website at argotough.com to see additional details in helping you decide to purchase the best out there.