The stylish 350ml glass mug is equipped with a silicone lid and cork sleeve. The mug can be used for coffee, tea, hot chocolate, or even cold drinks. Made out of borosilicate glass, it is heat resistant up to 200°C/392°Fahrenheit without being damaged. It has a nice weight that lets you know you are holding high quality coffee cup. The lid keeps your drink warm while the cork sleeve makes sure it doesn't slip out of your hand.