The Hydro Flask 40 oz. Wide Mouth is a water bottle for staying hydrated. Pro-grade stainless steel for a flavorless interior and a color last powder coat on the exterior for being your best-loved accessory. The large size holds onto 40 ounces of your favorite drink and the TempShield double wall vacuum Insulation helps the temperature stay as hot or as cold as it was when it entered the vessel. Drink up, there Are plenty of ounces to go. Features of the Hydro Flask 40 oz. Wide Mouth TempShieldA(R) Double Wall Vacuum Insulation eliminates condensation and keeps beverages cold or hot for hours Curved radius at the bottom edge for a lightweight look 18/8 Pro-Grade Stainless Steel BPA-Free Insulated Flex Cap, designed for ultimate portability and comfort More prominent stainless steel band at the top Color Last(TM) coating is dishwasher safe and slip-free