HIGH BOROSILICATE MATERIAL - Keep your hand cool while keep the coffee/tea hot. These glasses are made from ultra-light, heat-resistant borosilicate glass. | DOUBLE WALL DESIGN - Keeps the temperature of beverage hot or cold for a longer period of time while the outer glass wall remains comfortable to touch. Moreover, our mugs also keep iced coffee cold longer than a porcelain or ceramic cup. | HAND BLOWN CRAFTSMANSHIP - With the high-quality workmanship and experience of the glassblowers, the glass is wonderfully light, clear and smooth for easy and comfortable use. | FOR ALL KINDS OF OCCASIONS - Cookidea glass mugs serve the perfect for tea, espresso, latte, cappuccino. The entire glass is so clear that the coffee seems to float in air, it is a perfect addition to your breakfast and afternoon teatime. What is more, all lines are smooth and daintiness, creating a nice feeling in hand. | Product Dimensions: 10.5 * 9 CM, Capacity: 350 ml Each