Double Double Mokka Mug (Set of 2) Set includes two espresso cups 100ml, 3.4oz. These double walled small coffee mugs provide an extra layer of insulation so the exterior is cool to the touch even when handling steaming hot drinks It will not form condensation on the outside Your drink will appear to be floating in midair Mouth Blown of 2 layers of lightweight, durable borosilicate glass, Dishwasher and Microwave safe