Lens inclination adjustments with snap-lock ratchet mechanism - 2.2mm polycarbonate material tested at velocity to shield from impact - Crystal clear optical class 1 lens recommended for continuous wear - Hard coated sides for resistance to scratching - Fog prevention coating - Multi-length temple adjustment with 3 locking positions - Upper & lower eye protection vented for air flow and fog resistance - ANSI Z87.1:2003 - CE EN 166:2001 - CSA Z94.3:2007 - AS/NZS 1337