Schott Zwiesel Tritan Ivento 18 PC Set 6 White Wine  11.6oz, 6 Red Wine  17.1 oz and 6 Champagne  7.7oz Tritan crystal glass: non-lead material of titanium and zirconium oxide; resists breakage, chipping, scratching; thermal shock resistant; patented Built on a 130-year tradition of the finest German glassmaking, Schott Zwiesel is the most durable, most beautifully designed and best-manufactured glassware on the market. Completely lead-free and manufactured using the most environmentally sensitive technology available For any occasion, for everyday or when serving company, Schott Zwiesel crystal glass is sure to impress.