The Libbey Duratuff USA 4" stackable Old Fashioned Rocks Glasses Set of 2 is a vintage set of clear glass rocks glasses made in the United States. The glasses have a height of 4" and are stackable, making them easy to store and display. With an impression backstamp and original design, these glasses are perfect for all occasions and are a lovely addition to any drinkware collection. Made by Libbey, a reputable brand known for quality glassware.