The Stanley Classic One Hand Vacuum Mug provides complete convenience for those who want to get up and go with a cup of coffee in hand. Its vacuum-insulated body keeps hot drinks hot for 6 hours and cold drinks cold for 24, and the thermal lid features a push button so you can take a sip while driving without having to let go of the steering wheel. Stanley built this cup out of stainless steel that's naturally BPA-free and won't rust overtime.