Robust steel, but light as a feather. The simple and stylishly designed Stanley AeroLight thermo mug works perfectly, for example on the way to work or at your desk. AeroLight is suitable for both hot and cold drinks and is surprisingly light compared to other thermo mugs of a similar size. The secret lies in Stanley's AeroLight technology, which does not compromise on durability or heat output. Coffee or tea stays hot and cold drinks stay refreshing for hours. The lid closes tightly so the mug can be thrown into a bag or rucksack without the risk of leakage. This cup also fits in most car cup holders.