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Sleekly stylish, the orange and black Bengal wraps around the face for max protection. And it’s mighty ferocious on features. The semi-rimless design features a narrow frame and bridge for smaller faces, but the soft thermoplastic rubber (TPR) temples provide just enough flex to make them perfect for both men and women. Even further, Brass Knuckle’s unique PivotEase™ nosepiece offers a non-slip fit. Reminiscent of popular sports and shooting sunglasses, Bengal’s European style and super light weight make them ideal for workers and visitors alike.

Certifications and characteristics

Standard anti-fog protection plus abrasion, chemical, and UV resistance. Meets demanding industry test requirements (ANSI Z87.1+, EN166UV).

Clear lens allows maximum light transmission without changing or distorting vision or colors (91% of light passes through).

Smoke lens provides allover tint for normal outdoor conditions (18% of light passes through).

About the Bengal

The one-piece wraparound polycarbonate lens offers an unobstructed field of vision and high-impact protection, while the soft and flexible TPR temples easily conform to any size head. Slippage isn’t a problem; simply turn the nosepiece to a narrow position and then slide the eyewear on — the PivotEase™ nosepiece adjusts automatically and then seemingly “locks” into the perfect, no-slip positioning. Polycarbonate lenses in clear or smoke block 99.9% of the sun’s ultraviolet rays.


  • 10 base curve lens in clear or smoke for wraparound protection without optical distortion
  • Semi-rimless design with narrower bridge fits smaller faces
  • PivotEase™ nosepiece for a secure fit
  • Flexible TPR temples in orange and black
  • ANSI-rated hardcoated polycarbonate lenses
  • Standard anti-fog protection

Part Number Anti-Fog Lens Color Frame Color Accent Color
BKFLEX-4020 Standard Clear Black Orange
BKFLEX-4020S Standard Smoke Black Orange

Roll Up Your Sleeves and Tear In

BKFLEX-4020 Brochure (pdf)

Brass Knuckle Eye Protection Catalog (pdf)