Our bakeware is made from high-fired clay resulting in smooth, durable baking dishes that are microwave, freezer, and dishwasher safe. Each piece is oven safe up to 482F, thermal-shock resistant, and features an enameled surface resulting in a naturally non stick cooking surface. Durable enough for daily use and beautiful enough to serve in, the collection is offered in slate blue and olive green. Each set includes a classic casserole size rectangular dish, and an oval gratin baking dish for all of your savory or sweet dishes.