This is a soup cup from studio m'. It's from the Tapnade series and is microwave and oven safe. These are sturdy dishes, and each one has a unique texture. I believe I purchased these about 5 years ago. Perhaps because I bought them at different times, the backs of the cups look different. I used them regularly, so there may be some minor scratches, but there are no chips, cracks, or noticeable damage, and they are beautiful dishes. Please forgive any oversights as these are used items. Size: φ11.0cm W13.5cm D11.0cm H5.0cm 290cc ◎Product Description◎ The Tapnade series has a plump, thick shape that provides a sense of security. Even with its simple design, the thick, rounded rim, called "gyoku-en," adds an accent. The material is red clay, which is fired with a transparent glaze. The combination of the clay's rich expression and the glaze creates a gentle gray color. Also, you can see small iron particles when you look closely. There are variations in the particle size, and the gray color has shades, so the more you look at them, the more expressive they become, allowing you to feel the depth of the pottery. Gray is a color that is not often found in food, so it makes the dishes stand out. The functionality of being microwave and oven safe is also a great point for everyday use. Perfect for gratin or doria with plenty of ingredients and béchamel sauce. This series is packed with a "just right" size for everyday use.