Weck Airtight Glass Jar Lids for Food Storage - Keep Food Fresh Longer - Ideal for Canning, Pickling, and Meal Prep

Food expands when frozen, so these lids will expand to prevent pressure building inside Weck glass jars. Made from BPA-free plastic, these lids provide a strong seal and will not react with foods or absorb odors. Recommended particularly for refrigerator and freezer storage.