The FirePro-1971 EX-1™ model features a two-piece strap with semi-permanent mounting brackets that easily secure to brimmed helmets, no drilling required:
This patented system keeps the goggles on hand at all times, and allows them to be stowed on the front or back of a helmet.  

This configuration is recommended for use without face shields.

Other Key Features:

• Patented ESS Speed-Clip™ strap system makes adjusting the tension of FirePro™ goggle straps quick and easy, even with gloves on. 
• ClearZone™ FlowCoat lens treatments provide an optimal combination of anti-scratch coatings on the outside of the lens and anti-fog coatings on the inside.
• Low-profile frame with wide wrap minimizes helmet interference and maximizes peripheral vision.
• Full-perimeter ventilation and filtration system further minimizes lens fogging while filtering airborne particles, dust, and debris.  
• Extra-thick, 2.8 mm high-impact Profile™ Series military goggle lenses that meet and exceed ANSI Z87.1-2010, the U.S. Military .22 caliber ballistic impact test MIL-DTL-43511D (Clause 3.5.10), and CE EN 166.
• Lenses provide 100% UVA/UVB protection and distortion-free optical clarity.
• 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.

Kit Includes:

• 1 Black FirePro-1971 EX-1™ Goggle Frame with Closed-Cell Vent Foam
• A Two-piece Black Strap with Semi-Permanent Helmet Mounting Brackets (No Drilling Required) and Black Speed-Clip™ Strap Outriggers
• 1 Clear FirePro-1971™ Clear Lens
• 1 User's Guide
• 1 ESS Sticker