Spiegelau's glassware is special due to its attention to detail, quality materials, and functionality. The brand's glasses are made of lead-free crystal glass, which not only enhances their brilliance but also makes them more durable, dishwasher safe, and break-resistant. The specific glass shapes and high-quality glass surface contribute to enhancing the aromas and taste of beverages. Spiegelau's commitment to continuous improvement, energy efficiency, and sustainability further adds to its unique appeal.