The new Atomic Four Pro HD combines a timeless cylindrical look with a big dose of fresh style and attitude. Inside they use Atomic's unbeatable Cylindrical Double Technology. This next-generation lens features curves horizontally while remaining flat vertically. The HD Lens Technology uses crystals to improve snow visibility in all conditions. The Atomic Sealed Lens System means wind and water are shut out to provide you great visibility without the interruptions of fog and moisture. You get an extra HD lens in the box – put this in your pack and you really are prepared for all possible weather conditions on the mountain. Ready, set, go! Atomic Mens Four Pro HD Ski Goggles