Keep your beverages hot all day long with the Mainstays Warming Coffee Mug! This 12oz. Self-heating coffee mug features a simple yet convenient design and quickly warms up your drinks to your chosen temperature while the charging coaster keeps your mug going throughout the day. The LED indicator lights ensure that you?re always aware of the mug?s temperature letting you maximize your beverage?s flavor and enjoy a satisfying drink every time. Enjoy hot beverages all day long with the Mainstays Warming Coffee Mug!