Robust and - Egg cup set is made of high temperature stoneware. Also, the amount of clay we need to make is increased by 15%, which be more heat and last longer. Can be used in Microwave up to 500F. Concise Design - This egg holder is as beautiful as it is functional. A glaze gives each item a unique that look great. The clean glaze shows off the simple style and is a great choice for holiday gift giving. Perfect Sizes - . The flat bottom can be placed smoothly on the table. There are smaller snacks or dried fruit can be placed inside, both beautiful and practical. Scratch & Easy Clean up - The baking dishes are made of high quality glaze. Nonstick and smooth glaze resists scratch and for everyday use, making it easy to clean. Safe for Dishwasher and Freezer. Always allow them to cool before immersing in water. Colour:Photo Color Material:ceramics Package Contents: 6 x Ceramic Egg Cups Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.