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Sleekly stylish, the orange and black Bengal wraps around the face for max protection with a 10-base curve lens in clear or smoke (BKFLEX-4020S). The semi-rimless design features a narrow frame and bridge for smaller faces, and the soft TPR temples provide just enough flex to make them perfect for both men and women.In addition, Brass Knuckle’s unique PivotEase™ nosepiece offers a non-slip fit. Reminiscent of popular sports and shooting sunglasses, Bengal’s European style and light weight make them ideal for workers and visitors alike. Bengal offers our standard anti-fog protection.

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

BENGAL BKFLEX-4020 Brochure (pdf)

Brass Knuckle Eye Protection Catalog (pdf)