The ESS FirePro-1977 goggle series features a low-profile design that prevents helmet interference and increases peripheral vision. The patented Speed-Clip system facilitates quick strap adjustment, even with gloves on. All goggle components are heat and flame resistant, including the durable OpFoam face padding. The FirePro-1977 EX features the patented Snap-On/Snap-Off helmet mounting system, which allows the goggles to be stored in a pocket when not in use, then deployed in seconds. The FirePro-1977 EX is certified as compliant with NFPA 1977-2013 Edition, including the 350ºF for 5-minute oven test. Tear-Off Lens Covers are available as accessories. Ballistic Protection Standards Compliant With: NFPA 1977-2018 Edition, ANSI Z87.1-2015 U.S. Federal OSHA, CE, UL