Suitable: These wooden lids are suitable for 80mm caliber cups, suitable for most kinds of cups, such as mugs jar, ceramic cup, glass, etc. Dust and Moisture Proof: Wooden lids great for seal glass jars and canning jars, to prevent ash layer from falling in, moisture proof, ideal for offices, home kitchens, cafes. Superb Sealing: The reusable cup lids with sealing silicone ring, which can provide maximum sealing to prevent leaks and help lock in the freshness of your food. Applications: Our wooden mug lids can be used to seal glass jars for storing condiments, snacks, , creams, hair ties, tea bags or small crafts. Material: Cup covers are made of natural wood, healthy, environmentally friendly, and wear resistant, not easy to break, smooth surface without burrs, reusable and not easy to deform.