Men's Terra Stormbreaker Composite Toe Winter Safety Work Boot

Item # 839A
5 out of 5 Customer Rating
C$ 339.99
Colour: Black

Men's Terra Stormbreaker Composite Toe Winter Safety Work Boot

C$ 339.99
Product Details
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
  • Weight: 1610 grams / 3.55 lbs per size 9 boot
  • Style available: Black (839ABK)
Runs Small
Runs Large

About These Icons


3M is a pioneer in developing the science behind retroreflection and has been advancing the technology for over 70 years. 3M™ Scotchlite™ brand is one of the most trusted names in reflective materials and fabrics.

PrimaLoft® P.U.R.E.™

PrimaLoft® Gold Insulation P.U.R.E.™ is a revolutionary advancement in sustainability. Made from 100% post-consumer recycled material, this insulation is Produced Using Reduced Emissions. The result is a sweeping reduction in carbon emissions. Ultra-fine fibres deliver uncompromised loft, warmth and softness. A permanent proprietary, water-repellent finish allows the insulation to keep working in the harshest conditions.

Slip Resisting Results

The following average coefficients of friction (CoFs) were attained under specified test conditions according to the CSA Z195-14 standard. Tested at Satra Technology Services.

Test Surface Flooring Mode of Test Results (CoFs)
Quarry Tile Dry Flat 0.94
Heel 0.91
Wet Flat 0.67
Heel 0.65
Stainless Steel Wet Flat 0.65
Heel 0.60

Floor and air temperature, type of flooring, a contaminated floor surface are all variables that can affect the slip resistance of footwear. We recommend you seek the advice of your retailer, safety officer, and/or TERRA, a division of Workwear Outfitters LLC for appropriate footwear for your application.