Multiple use stoneware, dishwasher, microwave, freezer safe and oven safe up to 500 degrees F. For conveinance and versatilty,the glazed interior is nonpourous so food wont intereact.Contemporary design- playful shapes in vibrant and fun colors go directly from the oven to the table. The shallow sides result in crunchy tops for each serving. Wide handles-extra wide handle holes allow you to remove the stoneware from the oven even with bulky potholders.Easy storage- both items conveniently nest toegther to save space in your cupboard.