Royal Worcester Classic White Porcelain Dinner Plate, Set of 4 4- White Dinner Plates 10.5" ea Highest quality White Porcelain Simple White Pattern. Classic and Contemporary. Dishwasher and Microwave Safe. Use unscented dishwashing soap. Never place empty dish in Microwave. Guaranteed against manufacturer defects. For additional information contact The Portmeirion Group at 1888 778-1471. M to F 8:30 to 5:00 et.