Luigi Bormioli Optica Stemless Glasses, 570ml x 4, Crystal Delicately fluted details that circle each glass bringing an understated elegance to any social gathering. SON.hyx technology for sparkling clear glass that's ultra strong. Dishwasher safe. Why choose our Luigi Bormioli Optica range? Beautifully crafted glassware for every occasion Innovative SON.hyx technology is incredibly resistant to breakage Titanium reinforced glass stems for resistance to abrasions and superior hardness Dishwasher safe for easy clean up