With its classic keyhole bridge and unique interior kick-up feature that lets you clip it to your shirt, Oakley Latch was inspired by trailblazers from the world of skate, and this SQ edition blends the sharp look of rectangular lens shaping with all that originality and convenience. HIGH DEFINITION OPTICS LENSES All Oakley lenses offer HDO Technology with the following 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&rsquot really where you see them. HDO offers a truer visual image so your brain won&rsquot have to work overtime. UV Protection All Oakley lenses block 100 of UVA, UVB & UVC rays and harmful blue light up to 400 nm. GREY Light Transmission 16 Light Conditions Bright Light Contrast Neutral Base Lens Color Grey