Boasting thin walls, fine stems and a handmade look, these surprisingly sturdy red wine glasses from Schott Zwiesel serve your favorite Bordeaux, Rioja and Chianti. Made of extra-strong Tritan glass, the Vervino glasses resist breaking, chipping and scratching. This set of six red wine glasses is perfect for worry-free yet elegant dining.The inventors of shatterproof Tritan crystal, Schott Zwiesel has been creating innovative glassware in Germany since 1872.