FIBF-500 / F-500 FACESHIELD W/7" CROWN HIGH PERFORMANCE® Faceshields Made from Noryl, HIGH PERFORMANCE® Faceshields are stronger, more durable and more heat resistantthan ordinary faceshields. Choose from a 4" or 7" deep crown protector, depending on the need. They're designed for wide vision and extended view windows and screens, providing 40% more protective area than standard windows. The exclusive Channel Grip System mounts windows and screens and locks them in place in a deep, recessed channel to form a perfect seal, keeping dust, dirt and debris out. Ratchet 3-C headband secures a comfortable fit. SEI certified to meet ANSI Standards.