To Go Click is the perfect travel mug for your favorite beverage on the way to the office, school, or during a walk. The mug features a state-of-the-art Smart-Click lid that allows you to easily open and close it with a press on the top. When closed, it keeps your coffee or tea warm for up to four hours or cold for up to eight hours. The 0.4-liter mug is made of steel, is double-walled, and vacuum-insulated for thermal efficiency. You can drink from the full 360 degrees of the mug as if there were no lid. Be environmentally conscious and bring your own reusable coffee or tea mug when you're on the go.