Durable steel, yet as light as a feather! The simply and stylishly designed Stanley AeroLight thermal mug is perfect for commutes or on a desk at the office. AeroLight is suitable for both hot and cold drinks, and it is astonishingly lightweight compared to similarly sized thermal mugs. The secret is 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 fear of leakage. This is the largest thermal mug in its series, with a capacity of 0.6 liters, which allows for coffee for several breaks.