Winter Frost White 16-Pc Set 

• Includes 4-each: 10-1/4" Dinner Plates, 6-3/4" Bread and Butter Plates, 18-oz Soup/Cereal Bowls, 11-oz Stoneware Mugs
• Dishwasher safe for long lasting patterns
• Microwave and oven use for versatility
• Patterns won't wash, wear or scratch off
• Break and chip resistance for carefree durability
• Stackability for cupboard space efficiency

Note : Plates and Bowls are made in USA and Mugs are made in China

From Corelle Website

Why are my Corelle® mugs made from a different material than my plates and bowls?

The glass lamination process used for Corelle® ware is ideal for making plates and bowls, but it unfortunately does not work well for cup or mug shapes. That's why we offer stoneware mugs with every Corelle® dinnerware set.