Silicone Suction Lids. A Set of 4 Food Covers for Bowls, Pots, Pans, Cups and Various Food Storage Containers. Set includes one of each- small 6" (15 cm), medium 8" (20cm), large 10 1/4" (26cm), and super large 11 3/4" (29.8cm) diameter lids. 100% food grade FDA approved and BPA free silicone material. Reusable and eco friendly, replaces aluminum foil and plastic wrap. Preserves food longer during storage. Generates a strong airtight and watertight vacuum on most smooth surfaces including glass, plastic, metal, melamine and ceramic rims. Extremely easy to use, just press down on the center to create s strong vacuum seal. Saves time and money. Great quality and great value! Microwave, oven, stove, steamer, freezer, refrigerator, and dishwasher safe. Safe use in temperatures ranging from -40 to 440 F.