It is made of stainless steel with a double wall for the best tightness of the thermos. The double-walled design makes the thermo jug to keep the temperature of the drink for a long time. Equipped with a button with a pouring function – it is very easy to see if the thermos is open / closed. An additional advantage is that the thermos does not heat up and does not burn your hands. It is shock-resistant – you can put it in a backpack or purse without fear. Ergonomic design allows you to use the cup while driving a car, train, etc. It will fit most car handles. A thermal mug will be perfect at school or while traveling.