At OXO, we know the joys of cooking and baking - whether it's trying a new recipe for yourself, feeding family and friends, or bringing a dish to a potluck to share, it's a labor of love. But we also know what labor we don't love: Dishes. Between prepping, cooking, serving and storing, one meal can fill up a sink in a flash. The OXO Good Grips Glass Bakeware line saves time and reduces the number of dishes to clean, all while providing superior performance. This line of Bakeware is made of borosilicate glass, a durable type of glass that can withstand extreme temperature changes without breaking or shattering. This means the dishes can go from the directly from the freezer or refrigerator to the oven without breaking. Glass is naturally BPA free, and provides an elegant look you can bring right to the table. Please note the product is not intended for use under a broiler.