Spode Baking Days Green Bake and Serve Ramekin Set of 2 2-4.0-Inch Ramekins Made of opaque white vitreous Stoneware Available in Black, Blue, Red, Green or Navy with White Polka Dots Oven Safe to 475 degrees; Dishwasher safe Microwave Safe Never place empty items in microwave or oven; Guaranteed against manufacturer defects; For further information please contact The Portmeirion Group at 888 778-1471