The Bach collection's elegant faceted design offers the perfect balance between past and present, adding flair and nostalgia to every drink presentation. As functional as they are beautiful, glasses made with Luigi Bormioli's proprietary SON.hyx crystal glass material exhibit 0 alterations in transparency and brilliance for 4,000+ commercial wash cycles. This glass's unique flexible stem is treated with a permanent anti-abrasion TITANIUM Reinforced process that increases its resistance to breakage by 140%. Developed by the company's R&D department, these nanotechnologies help to maintain the glass's sparkle and transparency, in addition to preventing wear and discoloration from wash cycles. Ideal for environmentally conscious restaurants, hotels, bars, and caterers, Luigi Bormioli employs a proprietary eco-friendly melting process to produce glassware with low CO2 emission levels that is free of lead and other heavy metals. Designed with a perfectly flat base, this glass provides ultimate stability on surfaces.