Corelle Square 22-Ounce Soup/Cereal Bowl, Modern Lines, 6 Pack Made with break and scratch resistant patented Vitrelle glass technology Space saving design: lightweight and thin, yet extremely durable Microwave, dishwasher, and oven safe- patterns won't wash, wear, or scratch off Vitrelle Glass Dinnerware is made in the USA and comes with a 3 Year Warranty