The Luigi Bormioli , Lockeat, innovative, visually appealing glass, canning, preserving, storing and serving jars are not only easy to fill and easy to open , but also have a totally detachable lid.With the natrual rubber ( food safe gasket),they are airtight and canning safe.The jars are stackable, eco-friendly and reusable . Not to mention, an ideal gift, when filled up with delicious edible treats. Made In Italy.