Enjoy the perfect beverage, at the perfect temperature! The 12-oz. Double-Walled Hot and Cold Drinking Glasses are made with two layers of highest-quality borosilicate glass to keep your drinks at the optimum temperature. Hot drinks stay piping hot without burning your fingers. Cold drinks stay cold without messy rings or condensation. From coffee and cocoa to cocktails, cola and even ice cream, your guests will love these elegant and functional mouth-blown glasses! Dishwasher and microwave safe. Set includes 2 glasses.