Premium Material - - The double wall glass coffee mugs are made of high borosilicate glass and silicone material, with high strength and hardness, good light transmission, high temperature resistance, and easy to clean. Christmas Tree Design - - The Christmas coffee mug is decorated with dots and snowflake shapes of various sizes. The inner glass is a blue Christmas tree shape, with a golden star on the top of the Christmas tree, which is very delicate and beautiful. Double Wall Insulated Glasses - -The Christmas tree espresso cup has a double temperature insulation design, double wall insulated glasses will not freeze your hands when put in cold drinks, and will not burn your hands when put in hot drinks, and the water vapor generated will not wet the tabletop. No coasters are needed. Bottom Air Hole - - There is a small hole at the bottom of the heat resistant coffee cups to ensure the air pressure balance between the outside and inside the glass cup of the double glass structure to ensure safe use. Widely Application - - The Christmas glass cup has a white silicone lid, which can prevent dust and can also be used to maintain the temperature in the cup. Glass milk cup with lid is suitable for making coffee, milk, hot cocoa, tea and various beverages.