18/8 STAINLESS STEEL WATER BOTTLE - Made of 18/8 stainless steel, BPA free, non-toxic and odorless. Coated with environmental anti-slip powder at the surface, fully resistant to oxidation, rust, a perfect water jug for your daily water drinking. Dishwasher safe! DOUBLE WALL VACUUM INSULATION - The exterior of the vacuum-sealed area is dipped in copper which helps reduce the transfer of temperature and adds more insulation to your gallon water bottle. Maintain heat for 24 hours and cold for 48 hours. WIDE MOUTH GALLON WATER JUG - The 3.54 inch extra wide mouth water bottle for easy ice filling, or anything you like to put in the bottle . You can also put your hand inside the jug for fast pouring, and cleaning.