Fog is an ever-present, vision-killing threat in work environments with extreme fluctuations in temperature and humidity. Fight back against this looming giant, just like David and Goliath, with a Slingshot of your own. Simple, sporty, and colored mean green to mean business, Brass Knuckle® Slingshot™ features BK-Anti-FOG+ for the best fog protection you can find. It levels the playing field against the bullying of fog. 

Certifications and characteristics

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

About the Slingshot

Shatterproof lenses offer allover eye protection, extra-chunky molded nosepieces create added comfort, and earpieces fit snugly at the ears without putting the squeeze on temples. Clear BK-Anti-FOG+ coating on lens, black temple with green, for the perfect blend of style and function.


  • 99.99% UV protection
  • Unique ergonomic sporty lens shape for wraparound protection
  • Co-injected temples for great comfort and fit
  • Extremely lightweight

Part Number Anti-Fog Lens Color Frame Color Accent Color
BKFLEX-4050AFP BK-Anti-FOG+ Clear Green Black

Roll Up Your Sleeves and Tear In

SLINGSHOT BKFLEX-4050AFP Brochure (pdf)

Brass Knuckle Eye Protection Catalog (pdf)