Northwind Bowl - Set of 6 This Northwind bowl is made of melamine, which is highly shock-proof. Can be used for cereal, appetizers, soups or salads. Size: 5-7/8" Dia. INSTRUCTIONS: This product is designed for table use, not adapt for cooking or direct fire. Microwave only 90 seconds. MAINTENANCE AND CLEANING: To extend the life of this article, it is recommended to avoid using abrasive cleaners. To prevent stains from coffee and tea we recommend washing immediately after use. This product is dishwasher resistant.