This is a set of jar lids, which are manufactured with good bamboo materials, and safe enough to use. Equipped with a silicone ring underneath, which can prevent your jars from warping and form an airtight seal, sturdy, and leak-proof, helping your jars stay . Features -Color:Multi -Material: Bamboo -Size of the Small Jar Lid: About 7.00X7.00X2.20cm/2.76X2.76X0.86in -Size of the Large Jar Lid: About 8.60X8.60X2.20cm/3.38X3.38X0.86in - With the silicone ring, the bamboo lids fit wide mouth Jar, and other canning jars perfectly. - With a straw hole, the bamboo jar lids are compatible with most of straws. - Taken from naturally grown bamboo, these bamboo lids are light, and not easily deformed. - They are great for coffee jar. Please clean and keep dry every time after using. - The jar lids can be used for a long time and will protect your beverage . Package list: 1 x Small Jar Lid 1 x Large Jar Lid