Charles Viancin Citrus Stacking Lid is a beautiful and practical alternative to plastic wrap. The stackable lid also allows more storage space in your refrigerator. The lid seals tight on all smooth rims, which means any bowl can be used for food storage. The Citrus Stacking Lid creates an airtight, watertight seal for reheating and storing. It can also be used while serving food, to keep your dishes hot or cold for longer, or simply protecting them at picnics. Each lid is oven, microwave, dishwasher and heat safe up to 428 degrees Fahrenheit.