Durable steel, yet light as a feather! The simply and elegantly designed Stanley AeroLight thermos mug works perfectly during commutes or on your office desk. The AeroLight is suitable for both hot and cold beverages, and it is astonishingly light compared to similar-sized thermos mugs. The secret lies in Stanley's AeroLight technology, which does not compromise on durability or thermal performance. Coffee or tea stays hot, and cold drinks remain refreshing for hours. The lid seals tightly, so you can toss the mug into your bag or backpack without worrying about leaks. This is the largest thermos mug in its series, with a volume of 0.6 liters, making it perfect for several coffee breaks.