Stainless Steel Water Bottle - Best Vacuum Flask, Double Insulated Flask by Hot Beverage Flasks - Sizes 20 oz and 27 oz KEEPS DRINKS HOT OR COLD FOR LONGER - carefully designed double wall vacuum insulated stainless steel water bottles, keep your drinks chilled for up to 24 hours or hot for up to 6 hours, PREMIUM QUALITY - Hot Beverage Flasks make the best stainless steel water bottle for camping, hunting, fishing, sports, picnics and all outdoor activites, LIGHTWEIGHT, BPA FREE WATER BOTTLE FLASKS - because travelling light is the only way to travel, DOUBLE WALL INSULATED FLASK - means your flask won't weep or sweat, and everything stays dry, LIFETIME WARRANTY - because we want you to know that you can trust our products beyond the normal 60 to 90 day warranty period offered by other camping accessories manufacturers.