Quattro Stagioni Jar 110mm, 1.5lt 86mm Lid (3.59920) Box of 6Glass Construction: Quattro Stagioni Jars are typically made of high quality glass, which is durable, non reactive, and ideal for preserving foods. Airtight Seal: These jars often come with two piece metal lids consisting of a metal ring and a metal disc with a rubber seal. When properly sealed, this creates an airtight environment inside the jar, helping to preserve the freshness and flavor of the contents. Embossed Design: Many Quattro Stagioni Jars