Dr. Joe Silicone Silicon Lids Covers Perfect Suction Seal for Kitchen Home Utensils 5-Piece Set Set of silicone suction lids to fit various sizes of cups, bowls, pans, or containers, and can with stand up to 450F. Set includes one of each - 5in, 6in, 7in, 8in and 10in Lid. Suitable for use on all smooth surfaces: plastic, glass, stainless steel, melamine, and ceramic. Creates an airtight, watertight, and spill proof seal for reheating and storing. Creates an airtight, watertight, and spill proof seal for reheating and storing. Environmentally friendly: washable and reusable. Easier to use than plastic wrap: just press down to create the perfect seal. FDA Food Grade Silicone - Microwave, oven, freezer, refrigerator, and dishwasher safe!