The product that supports you while commuting and being on the go. As part of the Transit collection, the Aerolight Transit Tumbler is designed to be lightweight without compromising the desired liquid temperature. It keeps your drinks hot for 4 hours and cold for 6 hours. Whether you're commuting in the morning or hiking in the evening, this product will keep you hydrated whatever the weather. The bottle is also leak-proof and has a sealable, drink-through lid. This means you don't have to worry about spills when you throw your bottle in your bag and hop on the commuter train or start your workout. Plus, the AeroLight is dishwasher safe and BPA-free, making it easy to clean. The commuter-friendly Transit cups are 33% lighter than Stanley's standard stainless steel drinkware.