High-Quality Material: Crafted from premium borosilicate glass, a special glass known for its high-temperature resistance, strength, hardness, light transmission, and chemical stability. This mug is designed to withstand high temperatures without breaking. Please handle and wash with care, as all glass is fragile. Unique Appearance: Features simple and smooth lines with crystal-clear glass, making it a beautiful addition to any dining table. The double-insulated walls and transparent body create a floating illusion, enhancing the appeal of your drinks. Perfect for coffee, lattes, espressos, cappuccinos, tea, and both hot or cold beverages. Double-Walled Design: Boasts an insulated double-walled design to keep your drinks hot for longer. This design allows the cup to safely hold hot beverages and prevents condensation when storing cold drinks. Your drink will stay hot or cold longer than in a single-walled glass under the same conditions.