The ESS Crossbow Suppressor™ is the first spectacle frame designed for use with ear cup hearing protection and communications devices. Featuring Z-Bend™ Geometry, the frame's ultra-thin temple arms help keep noise out by minimizing the effect on the padded seal of ear cups. The slim temples eliminate the hot spots and pressure points that commonly occur when normal eyewear is worn under ear cups. The Suppressor™ frame is compatible with all Crossbow® lenses. These 2.4mm Polycarbonate lenses feature distortion-free ESSOPTICS™ and ClearZone™ FlowCoat technology to combat fogging on the inside and scratches on the outside. KEY FEATURES: . - Tri-Tech™ Fit works for virtually all adults, provides no-slip security & maximum comfort with no pressure points . - Ultra-thin Suppressor™ temple arms with Z-Bend™ Geometry are optimized for use under hearing pro & comms gear . - DedBolt™ Lens Lock keeps lenses secure under impact and enables simple & fast lens exchange . - Advanced ClearZone™ FlowCoat lens treatments eliminate fog inside & prevent scratches outside . - ESSOPTICS™ deliver distortion-free optical precision throughout the entire field of view . - 2.4mm high-impact 100% UVA/UVB polycarbonate lenses . - Full compatibility with helmet-mounted night vision devices . - Full compatibility with MICH, ACH, LWH, CVC, FAST, Crye™ and Ops-Core® helmet systems . BALLISTIC PROTECTION STANDARDS: . The Crossbow® Eyeshield exceeds U.S. MIL Spec MIL-PRF-32432, ANSI Z87.1-2010, OSHA & CE EN166 . except polarized eye pro which meets ANSI Z87.1-2010 (impact) & OSHA.