Terra Men's Stormbreaker Composite Toe Winter CSA Work Boot

In the most frigid conditions, work must go on—through snow drifts, howling winds and plummeting temperatures. Enter the Terra Stormbreaker with its eight-layer TERRASPHERE+™ liner engineered with PrimaLoft™ and Thermolite™ insulations, plus a Mylar heat-radiating film. Comfort rated and tested down to an astounding -60°C/-76°F, it’s built for comfort and warmth where few dare to tread.

The high-traction rubber outsole stays flexible in extreme cold as the micro-diamond texturing and sawtooth lug profile dig into the frozen earth. A CSA Grade 1 composite toe, composite plate and electric shock resistance keep you safer on the job.

• 15-inch, extreme cold resistant, DWR-treated 50% recycled PET upper
• Removable eight-layer TERRASPHERE+™ lining system engineered with Primaloft™ and Thermolite™ insulations, plus a Mylar heat radiating film
• Reflective 3M™ Scotchlite™ in quarter and shaft for low-light visibility
• High-traction, thermal-tested rubber outsole remains flexible in extreme cold
• Sawtooth lug profile with micro-diamond texturing grabs hold of the frigid ground
• Direct-injected, cold-formulated PU shell bottom with doffing-assist heel prong
• Two-layer spacer mesh + EVA moisture-wicking frost plug insole
• CSA approved composite safety toe, composite plate, ESR
• Comfort rated and tested to -60°C / -76°F
• Style Number: 839ABK