Fibre-Metal Noryl F-400 Dual Crown Ratchet Headgear features a clear propionate faceshield and provides protection to full face and neck. Headgear combines a 4" deep crown protector with a 4" deep chin protector and a 0.06" thick clear propionate window is placed between. The Speedyloop mounting system offers easy on/off welding helmet or faceshield mounting on protective caps. Headgear offers an extended wraparound protection when tough working conditions require it and offer more heat resistance than ordinary faceshields. It is fully adjustable to fit most caps and the headgear meets ANSI Z87+ standards.