Ideal for ceramic, stainless steel, glass, natural bamboo, and plastic - The Lid Lover has stretchable rings that allow it to fit perfectly on bowls and plates from 9" to 12.5" in size. Saves precious storage space with one lid fitting multiple sizes bowls. Easily collapses to store away. Lid lover is oven-safe (up to 400 degrees), microwave-safe, freezer-safe and is BPA free. Lid seals tight so it's perfect for travel and can turn upside down without spilling. Save money on plastic wrap and foil by using the Lid Lover instead.