Made of 100% lead-free crystal, Stolzle provides higher clarity and brilliance than comparable glassware which contains lead. Each of Stolzle's glass products undergo a special fire tempering process, increasing hardness and durability, and therefore reducing the risk of breakage. The smooth touch and delicate chime of Stolzle crystal glassware will make it instantly clear that your customers are receiving the best product and service possible. With the Stolzle Glencairn glass, your favorite whiskeys are sure to always look and taste their very best.