Lenses feature Oakley's HDO Optics with Polaric Ellipsoid Technology; Lenses feature a permanent anti-fog coating on the back surface; UV protection of Plutonite lens material that filters out all of UVA / UVB and harmful blue light up to 400 nm wavelength; ANSI Z87.1-2003/2010 and MIL PRF-31013 Rated; Secure fit even under wet conditions via Hydrophilic Unobtainium nose pad; Impact and chemical resistant O-Matter frame; Thin Stem Technology for over-ear protection compatibility; Ultra lightweight design (1.05oz total weight); Full compatibility with helmet-mounted night vision devices, MICH, ACH, CVD, PASGT, and Crye Helmets; Impact and chemical resistant O-Matter frame