The Thermal Mug is a stylish thermal mug great for travel and the commute to work. Vaccum insulated products have a double walled container inside, the air between these containers is sucked out creating a vaccum seal. This vaccum seal is what keeps your hot drinks hot and cold drinks cold. Reducing our carbon footprint has never been as important as it is now, do your bit to help the planet with this handy thermal mug. It has a leakproof lid and durable design making it easier than ever to enjoy hot drinks on the go.