The ESS Crossbow AF eyeshield features a flatter lens curvature and specific nosepiece to fit the contour of Asian facial features. ClearZone FlowCoat technology provides unmatched anti-fog/anti-scratch capability and ESSOPTICS offer a true distortion-free view of your objective. The Crossbow AF's patented DedBolt Lens Lock pivots open for quick lens exchange or locks shut for rock-solid retention under impact.