Wash before first use. DO NOT use glass dish on or under a flame or other direct heat source, including on a stovetop, under a grill, in a toaster oven or in an air fryer. Avoid extreme temperature changes. When heated or cooled too rapidly, glassware can break. DO NOT transfer directly from freezer to hot oven, or vice versa. DO NOT place hot glassware on wet or cool surface. Allow hot glassware to cool on a cooling rack or dry cloth. DO NOT add cold liquid to hot glassware. DO NOT use plastic lids in oven. Lids for microwave and storage use only. Always loosen lid before microwaving. Lid is top rack dishwasher safe. When removing from the freezer, leave at room temperature for a few minutes before opening.