New in Box Product Details Schott Zwiesel's Iceberg collection is deceptively simple and classically elegant, this design brings a distinctive sense of elan to any gathering. Our Iceberg barware collection features an oversized weighted bottom glass, offset by tall straight sides. Highball or on-the-rocks, this elegant design is rock solid and straight up-, just the way you want it. Schott Zwiesel® Crystal Glass is made from a formula that replaces lead with zirconium and titanium for brilliance and strength. Schott Zwiesel® Crystal Glass is unrivaled for the elegance of its design yet it is dishwasher safe. Each glass is made of Tritan Crystal. Chip, break and scratch resistant. Lead free. Set of 6 Dishwasher safe. Tritan® Crystal Glass Dishwasher Safe Imported