cs013. rockbros cycling sunglasses outdoor sports glasses polarized 100% uva uvb, warna hitam-merah marun warna : kombinasi hitam - merah marun frame material: acetate lenses optical attribute: 1pair polarized + 4 pair high clear lenses material: polycarbonate eyewear type: sunglasses weight: 26g features:tr90 switzerlanda swiss technology, this thermoplastic is the material used in all of our sunglasses. its extreme flexibility, durability and light weight make it the perfect material for performance eyewear.ultra lightweightas 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 youre wearing it.polycarbonate lens materialpolycarbonate is the extraordinarily durable thermoplastic thats used in bullet proof glass, riot shields and astronaut helmets. its 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.uv protectionall of our lenses block 100% of uva, uvb and uvc rays, and harmful blue light to 400nm. these harmful rays are a leading cause of cataracts, skin cancer and wrinkles around the eyes-all great reasons to block them out.polarized lensesour polarized lenses are made using an injection process that ensures theyre optically correct, decreasing eye fatigue and increasing comfort. as with all of our lenses. polarized lenses provide protection against 100% uva, uvb, uvc and harmful blue light to 400nm.