Duralex glass products are tempered. The mechanical and thermal resisting properties are considerably increased to other ordinary glassware products. THE WAVE FAMILY SIZES UP! In 2012, Duralex reinvented the stackable tumbler with Wave, an ergonomic glass, easy to use and stack with its easy-fit silhouette and very appealing fluid wave pattern. In 2013, the Wave range was extended in all meanings of the word: alongside the original 160ml, 200ml and 270ml formats, a big brother with 360ml highball content has just been added. The Wave glasses by Duralex are the perfect weight, functional yet stylish feels extremely comfortable in the hand. Because they are equally suitable for cold and hot food, they can go straight from the refrigerator to the microwave. They are conveniently stackable, impact and chip resistant, microwave and dishwasher safe. 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 manufacturer who makes 100% of their products in France.