Fit & Design: Switchlock Quick Lens Exchange allows for lenses to be switched out easily Thin Stem technology enables compatibility with over-ear hearing protection and comms Unobtainium(R) nosepad provides a no slip grip Lens profile expands zone to a full 120 degree view and a lens curvature that extends peripheral Lens Mark: Z87 Temple Mark: UL AN/NZS 1337 Z87+ molded into frame Technology: High Definition Optics(R) eliminates distortion gives you clearer, sharper, more accurate vision Additional Details: Limited Lifetime Warranty coverage against defects in manufacturing materials and/or workmanship Microclear(TM) bag included California Proposition 65