Schott Zwiesel wine glasses are preferred by hotels, restaurants and bar professionals because of its unparalleled brilliance and 130 years of history. Made of Tritan crystal, Schott Zwiesel glasses has an exceptionally hard surface that is resistant to scratching and dishwasher corrosion. It also enjoys a breakage rate up to 40% lower than traditional crystal glass, plus enduring brilliance, which translates into sparkling glasses and outstanding cost effectiveness.