The ultimate gift for the whisky drinker, this incredible set includes two double old fashioned glasses and two silicone molds that produce 2.5" diameter ice spheres. The secret to Schott Zwiesel glassware’s longevity is their exclusive Tritan Crystal and manufacturing technology. By eliminating lead content from glass and replacing it with Titanium and Zirconium, Tritan Crystal delivers superior durability and brilliant light-reflecting appearance. Additionally, Schott Zwiesel