Forged from fully-tempered glass, Duralex tableware has been proven to be more than twice as strong as regular annealed glass, giving you supreme confidence in these deep plates long term usability whether in the home or in the busiest professional restaurants. A thermal shock rating of 130? makes these plates safe to use in the dishwasher, freezer and microwave, allowing you to seamlessly swap between the three without fear of cracking or weakening. Perfectly practical - refrigerate, reheat, rinse and repeat again and again. If you re looking to upgrade your tableware with dishes that are certain to shine for years to come, the Duralex Lys range of Glass Dining Table Soup Dishes is simply it.