Serengeti 8420-Sestriere Sestriere， Satin Black， Polar PhD 555NM Blue<div style="text-align: left;"><strong>[Product Information]</strong><ul><li id="replacementPartsFitmentBullet" class="aok-hidden" data-doesntfitmessage="We're not sure this item fits your " data-fitsmessage="This fits your "><span class="a-list-item"><span id="replacementPartsFitmentBulletInner"><a href="#" class="a-link-normal hsx-rpp-fitment-focus">Enter your model number</a>to make sure this fits.</span></span></li><li><span class="a-list-item"> Serengeti Polar phd 2.0 lens is built with NXT technology and made from trivex material， which is lighter than polycarbonate and offers a superior optical quality </span></li><li><span class="a-list-item"> Using only the highest-quality Injected nylon TR90 for superior durability， these frames are exceptionally light， extremely flexible and comfortable </span></li><li><span class="a-list-item"> With superior Serengeti Polarization， the fatigue， discomfort， squinting and impaired vision associated with all forms of glare simply go away. Polarization available in select models only. </span></li><li><span class="a-list-item"> Darkening in bright sunlight and lightening in overcast conditions. Serengeti photochromic technology allows your eyes to adapt to any light </span></li><li><span class="a-list-item"> Serengeti spectral control technology filters specific light wavelengths， sharpening the way you see color contract and improving visual definition </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/31ne34jJuoL.jpg" noproxy>