Deep ratchet suspension accepts wraparound windows and screens and fits easily over spectacles or respirators. - The Fibre-Metal® faceshield crown protection headgear is made of Noryl® for durability and heat resistance. - Its proprietary Channel Grip window-mount system locks windows in place in a deep recessed channel to seal out dust, dirt, and debris. Color / Gray Compatible with Brand / Honeywell Fibre Metal Features / Crown Made of Heat-Resistant Noryl(R), Simple Window Mounting Pattern for a Secure Fit, Strip-Proof and is Guaranteed for the Life of the Headgear For Use With / Face Shield Visor Headgear Style / Single Crown, Single Crown Includes / Ratchet Headgear with Crown Material / Plastic Standards / ANSI Z87.1, CSA Z94.3, SEI Certified Suspension Adjustment Type / Ratchet