Double Double Cafe au Lait Mug (Set of 2) Set includes two drinking glasses 480ml, 16oz. These Double walled mugs provide an extra layer of insulation so the exterior is cool to the touch even if you are 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