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  • 5.11 Company 3.0 CST slip-on firefighter work boot (12421) | The Fire Center
  • 5.11 Tactical Company 3.0 CST Boot (12421) | The 5.11 Company 3.0 CST Boot is an ultra lightweight work boot with a certified safety toe and a puncture resistant Wellmax board in the footbed. The Carbon-Tac Safety Toe is about 20% thinner and about 30% lighter than a standard composite toe cap yet provides the same level of protection.
  • 5.11 tactical boot with Carbon-Tac safety toe (12421) | The Fire Center
  • 5.11 Company 3.0 CST slip-on firefighter work boot (12421) | The Fire Center
  • 5.11 Tactical Company 3.0 CST Boot (12421) | The 5.11 Company 3.0 CST Boot is an ultra lightweight work boot with a certified safety toe and a puncture resistant Wellmax board in the footbed. The Carbon-Tac Safety Toe is about 20% thinner and about 30% lighter than a standard composite toe cap yet provides the same level of protection.
  • 5.11 Company 3.0 CST slip-on firefighter work boot (12421) | The Fire Center
  • 5.11 Tactical Company 3.0 CST Boot (12421) | The 5.11 Company 3.0 CST Boot is an ultra lightweight work boot with a certified safety toe and a puncture resistant Wellmax board in the footbed. The Carbon-Tac Safety Toe is about 20% thinner and about 30% lighter than a standard composite toe cap yet provides the same level of protection.
  • 5.11 tactical boot with Carbon-Tac safety toe (12421) | The Fire Center
  • 5.11 Company 3.0 CST slip-on firefighter work boot (12421) | The Fire Center
  • 5.11 Tactical Company 3.0 CST Boot (12421) | The 5.11 Company 3.0 CST Boot is an ultra lightweight work boot with a certified safety toe and a puncture resistant Wellmax board in the footbed. The Carbon-Tac Safety Toe is about 20% thinner and about 30% lighter than a standard composite toe cap yet provides the same level of protection.

5.11 Tactical Company 3.0 CST Boot (12421)

12421
$155.00
$155.00
Shipping calculated at checkout.
Color Black
Size
Width

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5.11 Tactical Company 3.0 CST Boot (12421)

Slip 'em on. Step it up. Stay protected.

The 5.11 Company 3.0 CST Boot is what happens when protection, comfort, and convenience show up for duty together. Designed for station life but built to perform when the pressure’s on, these ultra-light safety toe boots are made for firefighters who need gear that keeps up—on and off the rig.

Let’s start with the Carbon-Tac® Safety Toe — it’s ASTM F2413-17 M I/75 C/75 EH + PR certified, just like a traditional composite toe, but 30% lighter and 20% thinner. Translation: legit protection without the bulk. Add a puncture-resistant Wellmax® board, and you’re ready for anything underfoot—glass, nails, rebar, you name it.

The Force Foam™ PU cushioning keeps foot fatigue off the table during those long shifts, and the new Ortholite® Achilles padding gives you extra comfort where it counts. Need to move fast? You’ll love how these slip-on, slip-off with zero fuss thanks to a redesigned nylon collar and heel pull.

Whether you’re headed to the truck bay or walking post-incident mop-up, the water-resistant leather upper and slip/oil-resistant outsole grip and go—even on the sketchiest surfaces.

Why Firefighters Love It:

  • ✅ Carbon-Tac® Safety Toe — ASTM Certified, super light, super strong

  • ✅ Slip-On Design — Quick on/off with updated collar and heel pull

  • ✅ Wellmax® Puncture Resistant Board — Built for unknown terrain

  • ✅ Force Foam™ Cushioning — Comfort that lasts your whole shift

  • ✅ Slip & Oil Resistant Outsole — Reliable traction wherever you land

  • ✅ Water-Resistant Leather Upper — Built to handle spills, slop, and stormy weather

  • ✅ Ortholite® Achilles Padding — For added comfort and support

Tech Specs:

  • ASTM F2413-17 M I/75 C/75 EH + PR Certified

  • Lightweight Carbon-Tac® Safety Toe

  • Puncture-Resistant Wellmax® Board

  • Force Foam™ Cushioning

  • Water-Resistant Leather Upper

  • Oil & Slip-Resistant Outsole with Climbing Lug

  • Ortholite® Achilles Cushion

  • Nylon Collar for Easy On/Off

  • Tactical Fit

From the bay floor to the unknown, the Company 3.0 CST is the firehouse boot that doesn’t quit.