* PREMIUM COFFEE MUGS,ENJOY LIFE - Double walled, Borosilicate material, Insulated glasses can withstand sudden changes in the temperature difference between hot and cold temperature range(-68°F~212°F),It has extremely high heat resistance and explosion resistance,and is durable.So you can enjoy your cup of coffee, espresso, cappuccino or tea warmer longer. When you have hot coffee, you won’t feel hot from outside and when you have cold drink,there is no condensation on the glass and table. * UNIQUE DOUBLE WALLED GLASSES DESIGN - Double wall glass has 2 layer design,smooth and crystal clear look than others,keep your fingers safe and cool with heat resistant and double wall glassware, so beverages stay warm without you getting burnt!the outside surface always feels comfortable in hand.Perfect for everyday use and impress the pickiest guests. * VERSATILE AND DURABLE - The premium 12 oz double wall glass is amazing for everyday casual dining and all entertainment, Double insulated coffee mug give an extra luxury look in your kitchen or on your dining table. It's more heat-resistant, high transparency, thinner and light weight, but more durable than normal glass. Nicely fit for espresso machine or coffee makers. * MICROWAVE AND DISHWASHER SAFE 3.13"W x 4.79"H 2.36 Pounds 12.3 Fl Oz