Food &Wine Magazines Favorite Summary The perfect everyday tableware, our sturdy, affordable porcelain set is designed for relaxed meals with family and friends. The classic white color shows off food beautifully and mixes easily with other dinnerware and serving pieces. Dinner Plates: Sized for serving main courses at breakfast, lunch or dinner, these versatile plates also work well for a buffet table. Made of high-fired porcelain. Part of our Open Kitchen collection, designed exclusively for Williams Sonoma. Microwavable and dishwasher safe. Commercial Grade: Thoughtfully designed and expertly engineered to meet rigorous standards and best practices from select commercial testing. Dinner Plate (4): 10 1/2" diam. Use Microwavable. Care Dishwasher safe.