AeroLight™ feather weight insulation Locking, drink-through lid Car cup holder compatible Dishwasher safe 18/8 stainless steel; naturally BPA-free The product to support your commute and on-the-go lifestyle. As a part of our Transit collection, the Aerolight™ Transit Mug is designed to be lightweight without compromising your desired liquid temperature. Keeping your drinks hot for 6 hours, or cold for 8 hours. If you are on a morning commute or an evening hike this product has you covered whatever the weather. The Bottle is also Leakproof, with a locking, drink-through lid. This means you do not have to worry about spills as you throw your bottle in your bag and jump on your commuter train or begin your exercise. In addition, the AeroLight™ is dishwasher safe and BPA free, designed for easy cleaning. Our commuter-friendly Transit Mugs are 33% lighter than Stanley’s standard stainless-steel metal drinkware. Product Code: 10-10787-