The Bodum Pavina Double Wall Glasses are handcrafted by expert artisans, made of quality borosilicate glass, ensuring you get the most out of your drinking experience. Double wall design adds depth and functionality to your glasses Made of quality, mouth-blown borosilicate glass Dishwasher, microwave and oven safe (up to 176degC) The Bodum Pavina Double Wall Glasses keep hot drinks hot without burning fingers and cold drinks cold without messy condensation, making them the ideal vessels for every beverage, from cocktails to cocoa. So you’ll only need to buy one type of glass for your home! Featuring resilient borosilicate glass Borosilicate glass is one of the strongest compositions of glass available. The particles in borosilicate glass are held closer together than traditional glass, making it sturdier and better able to adapt to temperature swings. This makes borosilicate glass perfect for holding extremely hot and cold temperatures without expanding or cracking. You can rest easy knowing borosilicate is the same glass type that laboratory beakers are made of.