Oggi's 6 piece ribbed mixing bowl set are attractive, and practical. Made of durable melamine, these bowls will last for many years. They're lighter than ceramic but ever so tough. Six distinctive colors and sizes: Red capacity volume 172 oz, Blue is 116 oz, Green is 76 oz, Yellow is 42 oz, Orange is 22 oz and Purple is 8 oz. Non skid bases. Dishwasher safe, not for use in microwave.