These beautiful wine glasses from Schott Zwiesel are durable and dishwasher safe so that you may enjoy using them on a daily basis. The Tritan crystal glass is composed of titanium oxide and zirconium oxide, a world wide patented crystal glass material. The Forte line features a tapered opening, narrower than the bowl, which traps aromas in the glass, thereby enhancing the nose and tasting experience. The stem and foot plate are flame tempered for reinforced strength. Suggested varietals to serve in these glasses are: Pinot Noir, Burgundy, Sangiovese, Chianti, Lambrusco, Beaujolais, Brunello, Temparanillo, Chardonnay, White Bordeaux, Viognier and Gewurztraminer.