Plastic

For comfort, lightweight and flexibility, plastic framed sunglasses are a classic solution. There are several types of plastics used to make sunglass frames. The cheaper styles and brands will use CR-39 grade plastic. This type of plastic is cheap and is used in most of your dollar store type sunglass frames. It will get the job done but is not very flexible and is prone to breakage and has little impact resistance.

Polycarbonate plastics are a much higher grade of substance and have the added advantage of being somewhat flexible. Polycarbonate plastics will "give" a bit before hitting the breaking point and are much more scratch resistant. This is the same type of plastics that make up the base of the plastic lenses as well. There are special processes though, that lens material goes through to make it polarized that the frames don't need to be subjected to.

Plastic can be molded into any shape for replicating whatever style of sunglass you want. Big Elvis glasses can be produced with plastic frames that are still as lightweight despite the size. If it were not for plastic sunglass frames, no one would be able to wear the "Jackie O." style of oversized sunglasses. Plastic mini frame sunglasses provide variety for the young ones. Children's first sunglass frames are usually the plastic variety. They are rugged enough to take playtime battering and are light enough that young people can still wear them in comfort.

Ralph Lauren sunglasses utilize plastic in most of the ladies sunglass models that carry the brand. They are obtainable in a wide variety of colors and can easily have crystals embedded in them for extra flash. Renegade makes a number of their sunglass series with polycarbonate plastic frames. It keeps down the weight for the various large styles and still provides plenty of strength for durability. Gucci developed a special beveled lens made from the same plastics as the sunglasses frames. These stylish additions to your fashion collection wear well and have the distinction of carrying their famous brand.

While many extreme sports competitors prefer nylon for their game play, plastic wrap around sunglass frames will still stand up to most rugged play while providing a light weight for comfort and visibility that is needed to compete. Plastic frames work very well with the rimless style of sunglasses. Whether they are injection molded wrap around rimless or have the temple pieces fused to the lenses, polycarbonate plastic is rugged enough hold its shape and lend support to the lenses.