![Brass Knuckle Spectrum Bkflex 4040 N Pr Image 3 8 21](https://img.ironpros.com/files/base/acbm/fcp/image/2022/01/Brass_Knuckle_Spectrum_BKFLEX_4040N_PR_Image_3.8.21.61dc94b1ecfa5.png?auto=format%2Ccompress&q=70&rect=189%2C84%2C1524%2C858&w=400)
The Spectrum (BKFLEX-4040N) eye protection brings together flexible comfort and N-FOG anti-fog lens protection, which permanently bonds to the lens and will not wear or wash off.
- Bowed, super-flex rubber temples ratchet for custom fit and only touch the wearer behind the ears, eliminating pressure points
- PivotEase nosepiece slides up and down and pivots on a hinge for added secure fit
- Provide anti-scratch, anti-static and UV protection properties
- Clear, smoke or amber lenses or optional indoor/outdoor clear or blue mirror lenses that do not include N-FOG technology