The Gigogne tumbler is amazingly durable and safe for your little one. It is the perfect weight, functional yet stylish and feels extremely comfortable in the hand. They are equally suitable for cold or hot drinks, 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 remain a true French manufacturer of glassware and tabletop products, and is the only glass manufacturer who makes 100% of their products in France.