Refined and simplified title: Luigi Bormioli Crescendo 15.5oz Tumblers, Set of 4, Crystal Glass, Made in Italy

Developed and registered by Bormioli Luigi, the SON.hyx Technology is a cutting-edge lead-free crystal glass that is free from heavy metals. This exceptional glass boasts outstanding chemical, optical, and mechanical properties.

The mechanical resistance of this glass is significantly enhanced through specialized production processes. Laboratory tests have demonstrated that glassware made from this crystal glass has improved resistance to mechanical shocks. The surface of the glass does not have any weak points, reducing fragility and enhancing its mechanical resistance.

The SON.hyx Technology offers impressive resistance to breakage, with a 37.5% increase in rim resistance, a 105% improvement in impact test resistance, and a 98% increase in stem twisting resistance.

Furthermore, this lead-free crystal glass is highly resistant to washing cycles, maintaining its transparency and brilliance even after 4,000 industrial cycles. Its sound amplifier properties and low CO2 emission levels during production make it an environmentally-friendly choice.

Luigi Bormioli's glass is renowned for its exceptional designs and first-class characteristics. Crafted from the purest raw materials, the company's advanced and eco-friendly melting processes, coupled with highly innovative production techniques, enable the achievement of an extra-pure, totally transparent, and long-lasting glass that is resistant to breakage.

The SPARKX collection by Luigi Bormioli exemplifies the Italian brand's commitment to art, creativity, and continuous innovation. The designer label of glassmaking, Luigi Bormioli, expresses the essence of the Made in Italy brand worldwide.

The company's technical ability in project development, constant improvement, and quality standards allow it to collaborate with both large multinational groups and small to medium-sized companies. The CRESCENDO line offers timeless and classic designs that are both elegant and functional, making it a favorite for weddings and a perfect fit for every home and restaurant.

Luigi Bormioli's proprietary lead-free crystal glass, SON-hyx, ensures the CRESCENDO glasses are extremely break-resistant and transparent. The 25-year guarantee covers chipping on the rim or foot, as well as any discoloration or cloudiness resulting from dishwashing. These glasses are also dishwasher-safe, allowing for easy cleaning and a like-new appearance.

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