Thermos Vacuum Insulated 18-Ounce Stainless Steel Hydration Bottle, Midnight, New 18-ounce hydration bottle with durable stainless steel interior and exterior Flip-top lid with built-in sipping design; button activated lid and additional clasp for secure travel Thermax double wall vacuum insulation locks in temperature to preserve flavor and freshness Condensation-free with cold beverages--won't leave rings behind. Hand wash only The color of the item is midnight blue, due to lighting it might reflect as back