Saber Advanced Sunglasses - Smoke Grey Lens - Matte Black FrameEye Size (PTX Rx Insert): 44/DBL: 25Head Size: Medium to XX LargeFeatures:Shatterproof Selenite™ Polycarbonate Lenses that Meet the MIL-PRF-32432(GL) Ballistic Standards. ANSI Z87.1-2010 High Velocity and Mass Impact Standards, and EN 166 FT at High Speed at Temperature Extremes Standards, and US Federal OSHA 1910.133(b)(1)(i) Standards100 percent UVA/UVB Protection with Distortion-Free ClarityT-Shell™ Lens Coating Resists Scratching in Extreme EnvironmentsAdjustable Take Flight Nose Piece accomodates any Face/Nose BridgeFully Adjustable Telescoping Temples fit a wide variety of Head Sizes, provides a Low Profile and Night Vision Goggle CompatibleLimited Lifetime WarrantyIncludes:Microfiber Storage Bag or Protective Storage CaseTactical StrapNose PieceInstruction Card