Featuring our largest 1-piece “shield-type” 6.25 spherical lens, the XR4 frame-style is crafted from magnesium/aluminum alloy.  XR4 features unobstructed vision with no vision obstruction from the fully adjustable nose bridge.  The maximum wrap Dual-Zone/Zero-Distortion lens delivers 100% UV400 eye protection.  Width: 136mm  Depth: 43mm  Temple: 120mm  Fits medium to large/broad faces.