EVIICC Mug Double Wall Glass Double Wall Double Structure Heat Resistant Glass Vacuum Insulation High Heat Retention Cold Retention Resistant to Condensation Stylish

【Product Summary】
Size: approx. 7.5cm (diameter) x 9.8cm (height), capacity: 250ml.
Material: Borosilicate glass (heat-resistant glass) Heat-resistant temperature: Heat-resistant glass cup that can withstand temperature differences from -20℃ to 150℃

High borosilicate glass chemical stability, no toxic substances, can also be used as water and drink cups, milk cups, coffee cups, wine glasses, chocolate cups and other hot drink cups. Dishwasher safe.
Manufacturing method: Each piece of blown glass is handmade by a craftsman. The sides are double-layered and contain air in the middle layer, which prevents temperature changes due to outside air. Compared to regular glasses, it prevents the body temperature of the hand holding it and the temperature of the drink from changing due to the air, and has the effect of keeping hot drinks hot and cold drinks cold.
Features: The material is heat-resistant glass called borosilicate glass. Unlike regular glass, it is characterized by high heat resistance and stability. After all, its most distinctive feature is its unique, beautiful transparency.