JoyJolt Disney Glassware,2 Piece Insulated Coffee Mug Set. Glass Mugs for Hot Beverages with Optical 3D Disney Mickey Mouse Design! Borosilicate Glass Insulated Mug Set. 5.4oz glass mugs, stands 3.25 inches tall to fit under all espresso machines. Insulated coffee mugs or teacup keeps espresso coffee hot, hands cool, and prevents condensation. Dishwasher, microwave, oven and freezer safe cute cups.