The classic 500mL travel vacuum mug features Thermos’ TherMax technology – creating an airless space between 2 layers of stainless steel for maximum temperature retention. Designed with versatility in mind, the wide-mouth makes this vacuum mug not only great for drinks, but also for food: easy to fill, to eat from, and to clean, this mug is designed to fit all of requirements of a busy lifestyle. made with unbreakable 18/8 stainless steel, this mug is sure to measure up to the wears and tears of everyday use. A leak proof lid makes sure that the food and drinks stays inside, and the large non-skid rubber base makes sure the mug stays where you want it to be.