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**Restricted to USA and APO/FPO sales** 


  • Fits SI M Frame™ Alpha and SI Halo™ High Definition Optics® (HDO®) for unbeatable clarity and    performance
  • Lens contours that extend peripheral vision and improve side protection
  • Plutonite® lens material filters out 100% of all UVA/UVB/UVC & harmful blue light up to 400nm
  • Unsurpassed impact protection Features
  • Options include Iridium® lens coatings and polarization
  • Compatible with SI Helo Kit
Oakley SI Ballistic M Frame Alpha Replacement Lens