The Tefalin Travel Mug Classic is a series of 0.36 and 0.5-liter thermos mugs. The smaller 0.36-liter mug keeps drinks hot for up to 4 hours and cold for up to 8 hours. The larger 0.5-liter mug keeps drinks hot for up to 6 hours and cold for up to 12 hours. The mugs in the series feature a silicone sleeve that is soft and comfortable to hold. With just one press of a button, you can drink from any edge of the thermos mug. Additionally, its design is completely leak-proof, so you don't have to worry about drinks spilling in your bag. It is dishwasher safe and easy to clean as all parts are dishwasher safe. Available in multiple colors. Opens and closes with the press of a button Keeps drinks hot for up to 6 hours and cold for up to 12 hours