The ESS FirePro-1977™ Series includes the most advanced low-profile willdand fire and rescue goggles on the market. The compact frame design prevents helmet interference while increasing peripheral vision. The FirePro-1977 FS™ model features a one-piece, wrap-around strap with Velcro tabs, making it simple to attach to any helmet. The patented ESS Speed-Clip™ strap system makes adjusting the FirePro™ straps quick and easy, even with gloves on. The full-perimeter ventilation and filtration system minimizes lens fogging and filters airborne particles, dust, and debris. The FirePro-1977 FS™ features battlefield-proven OpFoam™, a thin-yet-durable anti-microbial face padding that provides maximum comfort and ease of cleaning. Like all other components of the FirePro FS™, the OpFoam™ is heat and flame resistant. The extra-thick, 2.8mm high-impact lenses provide wide peripheral vision and distortion-free optics. These lenses also feature ESS' advanced ClearZone™ FlowCoat lens treatments, which provide an optimal combination of anti-scratch coatings on the outside of the lens and anti-fog coatings on the inside. The FirePro-1977 FS™ is certified to meet the NFPA 1977 wildland fire equipment performance requirements, including the 350°F for 5-minute oven test. They are also U.S. Federal OSHA compliant, exceed the requirements of ANSI Z87.1-2010, and are considered Primary Eye Protection by NFPA 1500. FirePro™ goggles use Profile™ Series lenses, all of which provide 100% UVA/UVB protection and distortion-free optical clarity. These high-impact, 2.8mm polycarbonate lenses meet and exceed ANSI Z87.1-2010 and CE. A prescription eyewear solution is available for ESS FirePro™ goggles: the ESS U-Rx™ Insert. This prescription carrier is cross-compatible with ESS Cross-Series™ and ICE™ Eyeshields, providing an Rx solution that can be used across numerous ESS eye pro platforms.