♨️ LIGHTWEIGHT AND HEAT RESISTANT - These insulated double wall coffee cups made out of borosilicate glass can withstand temperatures ranging from -30°C to 400°C! ❌ DOUBLE-WALL FOR HEAT PROTECTION - Not only does the double-wall design keep your fingers safe from the heat, but beverages stay warm up to 4x longer! 🔝 MICROWAVE AND DISHWASHER SAFE - Although we recommend to wash by hand for look preservation, it suitable for dishwasher and can also be microwaved! 🎁 PERFECT GIFT FOR COFFEE LOVERS - These elegant clear glass coffee cups are the perfect gift for someone who want a stylish mug for serving amazing coffees, espressos, lattes, and more! 💯 LIFETIME MANUFACTURER'S WARRANTY - Covers any damage or defect. Problems with your coffee cups? Contact us via Amazon for a full refund or replacement.