Pactiv CPET bases can go from freezer to oven, to shelf, to home all in the same package! A wide variety of sizes for multiple baking applications, all available with high clarity after bake fit lids perfect for merchandising product. Lids are not ovenable or microwaveable., Highlights, Freezer Safe, Oven safe, Microwaveable base, Superb low temperature breakage performance, Lids and bases are sold separately