Description This is a set of mason jar lids, which are made of bamboo materials, and can be used for a long time. With the silicone ring, the bamboo lids fit wide mouth mason jar, and other canning jars perfectly. Share with your friends and family as they are wonderful housewarming gifts. Features -Material: Bamboo - Manufactured with good bamboo materials, they are 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 fresh. - These tank storage lids are compatible with most ordinary mouth mason jars and wide mouth mason jars. They can also use water cups and food storage tanks. - The straw hole on lids makes it convenient to drink beverages and other drinks. - The convenient bottle lids are perfect for home, camping, milt tea shop, coffee shop, etc. Manufactured with good bamboo materials, they are 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 fresh. These tank storage lids are compatible with most ordinary mouth mason jars and wide mouth mason jars. They can also use water cups and food storage tanks. The straw hole on lids makes it convenient to drink beverages and other drinks. The convenient bottle lids are perfect for home, camping, milt tea shop, coffee shop, etc.