Double walled glasses that breathe! Individually mouth-blown by expert artisans, BODUM’s proprietary Double Walled Glasses feature two walls of borosilicate glass, creating a highly effective layer of insulation. Hot drinks stay hot for longer & you'll no longer burn your fingers while holding your glass. Cold drinks will also stay cooler for longer without the unpleasant sight of condensation on the outside of the glass. Due to their remarkable technical qualities, BODUM double-walled glasses are very often used by gastronomy professionals to prepare a multitude of appetizers, smoothies, soups, starters, desserts, etc. Each double walled glass is mouth blown by expert craftsmen, & may therefore have slight differences in height, thickness & weight. Dishwasher, microwave safe, & oven safe (up to 350°F/176°C). Product Details • Unique Design • Insulated • Can also be used as a verrine • Supplied in a gift box