**Restricted to USA and APO/FPO sales**The Oakley SI Ballistic M Frame 2.0 surpasses ANSI Z87.1 Industrial Standards for high-mass and high-velocity impact protection. The M Frame 2.0 additionally meets MIL SPEC MIL-PRF 31013. All lenses are made of pure PlutoniteA(R), a proprietary material that offers the highest level of optical clarity available in eyewear. It also features a clip that holds the lens and frame together providing more secure support.FEATURESFully compliant with all ANSI Z87.1-2003 protection requirementsFully compliant with MIL-PRF-31013 Vo BallisticsPlutonite lens material blocks 100% of all UVA/UVB/UVC and harmful blue lightFull compatibility with PASGT, CVC and MICH helmetsFull compatibility with helmet-mounted night vision devicesDistortion-free optics via patented Polaric Ellipsoid lens geometry that minimizes refractionExtended upper/lower/lateral/ viewing fields via Polaric Ellipsoid geometryMaximized comfort of ultra-lightweight design (1.05 oz. total weight)Secure fit, even under wet conditions via hydrophilic Unobtanium at all contact pointsConvenience of easy lens replacement with no need for tools