⚜Product Specs: Set of 4 double wall mini cups measuring 6 cm opening and 7 cm height, holding 2.73 oz each ⚜Product Characteristics: 100% Borosilicate glass. ALL Hand Made. High quality double wall, Insulated, scratch and break resistant. ⚜Product Functionality: Suited for hot and cold beverages. This durable and chic looking mini cup is good for hot and cold beverages, be it coffee, tea and brew! The size and design of it can even be used as serving desserts or canapes at parties! ⚜ Caution: Microwave safe up to 350°F/180° C. Oven safe up to 350°F/180° C. Dishwasher safe/freezer safe. Avoid extreme temperature differences. ⚜Additional: Definitely multi-purpose, perfect for home use AND as gifts! Gmark Espresso Cups Shot Glass 2.7- Ounce Coffee Set of 4 - Lightweight Double Wall Thermo Insulated GM2028