Lightweight and Durable - These glass coffee mugs are made of mouth-blown borosilicate glass, which is lighter and more durable than normal glass, providing a comfortable grip.Insulated Double Wall Design - The double-wall glass cups stay cool to touch, keeping your hands safe from burns, and they do not produce condensation. They also keep your drinks hotter or colder for longer compared to single-wall glass or ceramics.Widely Used - Each glass mug holds 8 ounces, making it suitable for espresso machines and coffee makers. It is also microwave and freezer safe, allowing you to reheat or enjoy cold beverages. Additionally, it is dishwasher safe but hand washing is recommended.Safe Packaging and Ideal Gift - Our clear coffee mugs are carefully packaged to prevent breakage during shipping. They come beautifully shaped and wrapped in a gift box, making them an ideal gift for family and friends on special occasions.Prevents Bursting - The small round hole design on the bottom of the glass coffee cups allows the glass to breathe, preventing bursting during use.