rockbros outdoor sports eyewear with 5 lens bike sunglasses cycling glasses polarized eyeglasses bicycle riding goggles accessories

ultra lightweight as with any piece of high-performance equipment, weight is an important factor. tr90 is incredibly lightweight, which contributes to the comfort of our eyewear and the tendency to forget you're wearing it. polycarbonate lens material polycarbonate is the extraordinarily durable thermoplastic that's used in bullet proof glass, riot shields and astronaut helmets. it's the ideal material for performance eyewear because of its high impact resistance, inherent uv protection and light weight. all of our lenses are made of polycarbonate.