Thermos Vacuum Insulated 18 Ounce Stainless Steel Hydration Bottle, Stainless Steel 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 Thermos patented vacuum insulation locks in temperature to preserve flavor and freshness Condensation-free with cold beverages--won't leave rings behind. Dishwasher safe. The color of the item is midnight blue, due to lighting it might reflect as back.