Signature Borosilicate Roasters are made of high-quality borosilicate glass and are sure to please. These two baking dishes are made from durable and oven safe BPA free glass, turning and monitoring your meals comfortable and easy. Safe for food storage in refrigerator or freezer. With thermal shock resistant glass, ovenware is protected when transferring from oven to table and from room temperature to the freezer. Nice enough to bring to the table and serve directly. Always ensure hot dishes are placed onto heatproof mats or trivets to protect surfaces underneath.