Giorgio Armani is a pair of glasses produced by the Italian SAFILO company. Most of them use patented materials like Optyl (epoxy resin). Its weight is 20~44% lighter than ordinary plastic frames. Compared with traditional thermoplastics, this material has an excellent polished surface, produces a unique fantasy color, and is also tougher and less likely to deform. Optyl frames are easy to identify. Its legs do not have the metal rods used in ordinary plastic frames to increase resistance to deformation and increase strength, and the word Optyl is stamped on the bottom of the temples. The one-time thermal processing and polishing process of this material requires a very large investment in equipment, so it is difficult to counterfeit in China.