Founded in 1939, Duralex has been manufacturing tempered glassware and tabletop products for over 80 years in La Chappelle-Saint-Mesmin in the very heart of France. Since 1939, when Duralex invented the glass tempering process, the name Duralex has been associated with toughened glassware, utilizing their proprietary process. The Gigonge glass is functional yet stylish and feels extremely comfortable in the hand. The tempered glasses are equally suitable for cold or hot drinks, conveniently stackable, microwave, freezer and dishwasher-safe, impact and chip resistant, and the perfect weight. With the help of continuous investments and commitment to quality, Duralex has reached a level of excellence that makes its products recognized throughout the world. Duralex is and will always remain a true French manufacturer of glassware and tabletop products, and is the only glass manufacturer that makes 100% of their products in France. Gigogne-Duralex"s Gigogne glasses are named after an old French word meaning "nested" and as the name implies, these simple, understated glasses are meant to be stacked and easily stored. The Giogone line has been a standard for French mothers who covet glassware that is easily handled, shatterproof, and dishwasher safe. In other words, the Giogone is meant to be child proof and low care. Extremely durable tempered glass that is also hygienic and non-porous.