KOSIUN represents a stylish and elegant lifestyle. This set of crystal glass red wine glass uses high-quality lead-free crystal material-a new generation of healthy and environmentally friendly products, contains no lead ingredients, is more healthy and environmentally friendly, and is a healthy choice.suggested wine varietals: Pinot Noir, Burgundy, Sangiovese, Chianti, Lambrusco, Beujealouis, Brunello, Chardonnay, Viognier. Tips: 1. If the wine glass you received is damaged, please send us an email in time and we will replace it for free. 2. This set of red wine glasses uses lead-free crystals, modern craftsmanship, thinner than ordinary glass, and traditional craftsmanship. If you like thick and heavy regular red wine glasses, please buy them carefully. 3. This wine glass is hand-blown, not made by a machine, and not integrally formed, so there are inconspicuous seams on the upper and lower parts of the stem. If you like to make it by machine, Integrated molding, please buy it carefully. 4. Hand washing recommended.