★ QUALITY BOROSILICATE GLASS - Due to the coffee cup make of high borosilicate glass, it is lighter and thinner than regular glasses, capable of withstanding thermal shock, scratch, and break resistant. ★ DOUBLE WALL DESIGN & INSULATION - Double wall thermo insulated espresso mugs design, never worry burn hand. And more, the glass coffee cup is keep coffee or beverage hotter and cooler than ceramics mug. ★SUITABLE SIZE - Coffee cup set holding 2.7oz, suitable for espresso machine and easy to handle. Perfect for morning coffee cappuccino, latte. ★ DISHWASHER FREEZER AND MICROWAVE SAFE - Espresso glasses mug it is easier to clean than plastic mug and safe in dishwasher. if you want to hot coffee you can reheat again in microwave, or you want drink cold beverage, it is also safe in freezer. ★ 30 DAYS WARRANTY - You satisfied is a great honor for us, so we guarantee to offer a free replacement or refund if anything goes wrong about the product within 30 days.