Our insulated steel water bottle comes with a double wall technology that keeps your water cold for 24 hours and hot for 18 hours so that ,they're cool to touch when filling with the hot liquids and also sweat-proof with cold liquids,highly prevent sweating, condensation, smudges and fingerprints.Making your beverage ready to drink just fine!. It can also be used as a flask for tea, coffee or other beverages! Take your durable stainless steel water bottle with you on any adventure! Made from 18/8 food-grade stainless steel, our refillable flask always ensures a pure, clean taste that won’t retain or transfer flavors. Whether you’re running on a trail, riding a bike, catching swell waves or playing sports, our hydro canteens are the best hydration companions. What you like, what we do!