Anchor Hocking TrueFit Glass bakeware products are designed with a flexible, easy open lid that seals in freshness and enables easy storage and transportation. Anchor Glass bakeware is microwave, pre-heated oven, refrigerator, freezer, and dishwasher safe and is tempered for maximum durability. TrueFit lids are BPA-free and top rack dishwasher safe. The lid design allows for easy cleaning and reduces the risk of trapped food and bacteria. Lids open easily and feature a transparent window for easy viewing. These conveniently sized dishes are ideal for baking your favorite dish and transporting to and from potlucks, picnics, and other social gatherings.