Bodum Bistro thermal double wall mug is great for everyday use. Made of heat-resistant borosilicate glass, and individually mouth-blown by expert artisans, it features excellent insulation properties. The mug stays cool to touch when serving hot beverages and prevents messy condensation with cold refreshments.1-Hot drinks stay warm longer.2-Microwave and oven safe up to 180°C.3-Dishwasher-safe.