No need to transfer your food from its baking dish to another. Durable, plastic lid slips over glass dish for a perfect, snug fit, making transporting your food simple. Forget the wasteful foil. Lid works great for storing in the refrigerator, too. Convenient, endless use. Oven and microwave safe glass (plastic storage lids microwave safe only). All dishwasher safe and BPA free . USA made.