GREAT QUALITY- 100% Borosilicate glass. High quality double wall, Insulated, scratch and break resistant, able to withstand thermal shock. DOUBLE WALLED DESIGN- Our special double wall thermo insulated design prevents side heat transfer, maintaining the ideal temperature. Never burn your fingers again. FOR ALL OCCASIONS- Multi-use glassware to serve the perfect espresso, spirits, latte, cappuccino, tea or dessert. CUTE CAPACITY FOR ESPRESSO LOVER-  Each espresso shot cup is measuring 2.4inch opening and 2.4inch height, which holds 2.7oz (top to the rim). Works great with espresso machines. MICROWAVE & DISHWASHER SAFE- Sipping piping hot caffeine as soon as possible prepares us for the day. Cleaning glassware as soon as possible set free your hands. Our espresso cup is microwave and dishwasher safe.