About This DOUBLE WALL INSULATION DESIGN???Our clear glass coffee cups are made of lead-free high quality handmade borosilicate-glass. Keep your fingers safe and cool with double walled glasses, heat transfer resistant glassware, so beverages stay warm without getting burnt! DURABLE AND EASY TO CLEAN???These shatterproof, scratch resistant mugs are durable! Borosilicate glass is the material you want when dealing with any glassware for best results! Note: For the long-term use of the cup, we recommend hand washing. SUITABLE FOR ALL KINDS OF DRINKS: The double-walled coffee mugs are perfect for cappuccino, latte, espresso, macchiato, juice, iced beverages coffee or tea warmer longer on holidays???birthdays or any occasion. THE GIFT SET: ultra light weight, clear double-wall mugs ships in a beautifully designed printed box Overview Brand : MEWAY Material : Borosilicate Glass Color : Transparent Capacity : 12 ounces Special Feature : Double layer insulation