Luigi Bormioli 08746/11 Prestige 15 oz Riesling White Wine Glasses (Set of 4), Clear Measures 3.4DIA X 8.7H 0.40LBs 15 oz wine glasses come in a set of 4 SON.hyx - High-Tech blown lead-free crystal glass, is break resistant and dishwasher safe Titanium Reinforced - Permanent anti-abrasion treatment applied directly to the glass stems to increase resistance to breakages Fine, reinforced and laser cut rims Innovative, elegant and functional design Pulled stems do not have any mold seams and are highly flexible Flat foot to guarantee better stability and easy to hold Made in Italy 25 year guarantee covers rim and foot chipping as well as discoloration from dishwashing Luigi Bormioli Prestige (Atelier) 15-7/8-ounce Riesling Set of 4 Luigi Bormiolis proprietary material called SON.hyx allows the glasses to be extremely break resistant and transparent. 25 Year Guarantee! The guarantee covers chipping on the rim or foot as well as any discoloration or cloudiness resulting from dishwashing. Innovative glassmaking techniques produce perfectly smooth rims and edges Dishwasher-safe; made in Italy +37.5% Resistance of the rim +105% Resistance to impact test +98% Resistance to twisting of stems Sound amplifier Lead and other heavy metal free Produced with low CO2 emission level Guarantees the stems resistance to breakages even after multiple industrial washing cycles Glass sparkle and transparency is maintained Avoids any glass discoloration purest raw materials, advanced and friendly melting processes highly innovative production processes, enable the achievement of a glass: extra pure and totally transparent, sparkling, longer lasting, resistant to breakage