DescriptionInfluenced by Oakley's popular Crosslink™ Rx frame, the Chainlink™ is an active lifestyle model for those who play hard and want original style for life beyond sports. Our lightweight O Matter® frame material provides premium comfort while our Three-Point Fit retains the lenses in proper optical alignment. All Oakley lenses offer HDO® Technology with these benefits: Clarity: Conventional lenses can magnify images. HDO® precision gives less distorted vision across the entire field of view. Refraction: With regular lenses, objects aren’t really where you see them. HDO® offers a more natural visual image so your brain won’t have to work overtime. UV Protection: All Oakley lenses block 100% of UVA, UVB & UVC rays and harmful blue light up to 400 nm for the absolute best protection.