Anchor Hocking TrueFit Glass bakeware products are designed with a flexible, easy-open lid that seals in freshness and enables easy storage and transportation. TrueFit lids are BPA-free and top rack dishwasher safe. Lids open easily and feature a transparent window for easy viewing. Anchor Hocking glass bakeware is dishwasher safe, microwave safe, freezer safe and oven safe up to 425°F.