This Double Old Fashioned glass from Libbey® is part of the Infinium Collection and is easily stackable to minimize storage footprint. It is made from 100% BPA-free Tritan™ copolyester and has the look of glass with the durability you get from plastic. This glass is resistant to impacts, cracking, crazing and shattering and is perfect for outdoor and poolside service. It is dishwasher safe and maintains a "like new" appearance after hundreds of cycles.