Shiny Golden Metal Frame Sunglasses Ultra Lightweight As with any piece of high-performance equipment, weight is an important factor. Incredibly lightweight, which contributes to the comfort of our eye wear and the tendency to forget you’re wearing it. It has anti scratch function, so you can wear it to play sports Poly carbonate is the extraordinarily durable thermoplastic that’s used in bullet proof glass, riot shields and astronaut helmets. It’s the ideal material for performance eye wear because of its high impact resistance, inherent UV protection and light weight. All of our lenses.