This set of 4 handmade, double-wall thermo mugs, each mug boasting a unique curvature that holds 5.4 ounces. Joyjolt's unique double walled glasses are designed to suspends drinks within an inner wall for an engaging optical effect. They are made of heat and condensation-resistant borosilicate glass, which is stronger and more durable than common glass and which gives a smooth finish and a crystal clear look. These espresso mugs keep your liquid hot while keeping your hands cool at the same time. The high-quality glass makes this safe for dishwasher and microwave use however best not to use metal utensils. These make a beautiful addition to any cafe, restaurant, pub and to your own home. Can be used for cappuccino cups, lunge cups, macchiato, latte, espresso cups, demitasse cups, tea, smoothie and juice. Ships in an elegant colored printed box that is perfect for gift giving. Give that someone special in your life something that they will enjoy. Set of 4, 5.4 ounce capacity Double wall insulated glasses, ideal for espresso Top quality borosilicate glassware Dishwasher safe Microwave safe Designed in the us, manufactured in china Backed by limited 1 year manufacture warranty Beautiful gift box to present as a gift for that special occasion  # Pieces In Set: 4 Features: Freezer Safe, Oven Safe, Transparent, Microwave Safe, Dishwasher Safe, Insulated, Double Wall Construction Capacity: 5.4 oz. Maximum Temp (f): 450 Degrees F Mug/Teacup Measurements: 3 Width/Inches, 3 Depth/Inches, 3.25 Height/Inches Base Material: 100% Glass Care: Dishwasher Safe Decor Styles: Modern Material: Glass Country of Origin: Imported