Sakura Stoneware; They are black with red on the inside. RARE!!!!! THREE are available will ship in sets of TWO only due to weight. Each measures 14 inches round. No chips or flaws. Port of Call Collection Sunset. Microwave and dishwasher safe. Please refer to photos. No imperfections Stored in a smoke free home, these are my favorite mugs for my morning coffee; unfortunately, or fortunately for you I have too many!