DOUBLE WALLED DESIGN: The double walled glasses help to keep hot drinks warm and cold drinks cool thanks to the thermal qualities of the construction. There will be a tiny hole at the bottom of each glasses to equalize the pressure between the glass walls, so that no condensation with cold drink. The green in the inner wall adds some color to your daily life. QUALITY MATERIAL: These double walled glass mugs are made of borosilicate glasses, very lightweight, clear smooth, lead free, BPA free, food-safe grade. The handles are nicely sized and super comfortable also durable for convenience. SPECIFICATION: Top diameter is around 3.1/8cm, handle with is about 1.2/3cm, height is around 4.3/11cm. The capacity is 400ml. Not safe in dishwasher and microwave. Long-term use in the dishwasher or microwave will cause the small hole to melt. So we recommend hand wash for safety. OCCASIONS FOR USE: These colored coffee cups come in adequate size, great for daily use, like hot/cold coffee or tea, sorbets, beverages, juice, milkshake etc. It is a bonus to your glassware collection and also a good gift for birthdays, housewarmings, weddings, Mothers Day, Fathers Day, Thanksgiving, Christmas, Anniversary. Our glassware are well made and undergoes strict quality control, they are safe and healthy to use. These glassware are beautiful and practical, which can let you enjoy a relaxing time and a high quality life. Specification: - Material: Borosilicate Glass - Colour: Green - Capacity: 400ml (14oz) - Diameter: 3.1 - Height: 4.3 - Package include: Pack of 2 Coffee Glasses Care and Cleaning: 1. Not safe in the dishwasher and microwave. 2. Hand wash is recommended for safety. 3. Rinse slowly and wipe gently with soft cleaning cloth. 4. Glassware are fragile, avoid contact wit