San Black Gold Transparent 004 49-16-140 Plastic Metal  frame look much extravagant as well as stylish than any other material. This type of eyeglass are fashionable, and if you live where it is quite warm throughout the year, consider buying metal eyeglass as plastic frames can stretch out its shape in extreme heat.esbyopia, and is a natural part of aging that will eventually affect you no matter how good your vision was when you were younge.