Corelle Livingware…The original break and chip resistant glass dinnerware. Trust that it can stand up to the rigors of everyday life and still look great. 3 year replacement warranty against breaking and chipping! An effortless pattern of bands and dots in versatile gray lends an airy, uplifting feel to any table setting. Vitrelle is a unique, tempered glass that is resistant against breaks & chips. The special glass makes versatile Corelle dinnerware as thin and translucent as fine china, yet dramatically stronger. Vitrelle is microwave safe and even safe for oven use up to 350 degrees.