Palais Mason Jar Tumbler Mug with Stainless Steel Lid - 16 Ounces - Set of 4 (Diamond Design) Palais Mason Jar Tumbler Mug Includes a metal screw top lid Great for Old-fashioned iced tea, lemonade, or any refreshing drink Popular at county fairs and casual restaurants, the mason jar mug can now be enjoyed at home. The sturdy glass construction makes the mug ideal for everyday use and the handle makes it easy to hold. Crafted of High Quality durable glass, known for durability and elegance. Innovative glassmaking techniques produce perfectly smooth rims and edges.