Built to withstand the extreme conditions of wildland suppression and technical rescue, the GP.640 Nomex® IIIA Wildland Cargo Pants provide the perfect balance of safety, utility, and mobility.
The core of the GP.640 is the Nomex® IIIA fabric—a trusted blend of 93% Nomex®, 5% Kevlar®, and 2% carbon (P-140) antistatic fiber. This advanced material provides inherent flame resistance, meaning the protective properties are part of the fiber’s molecular structure and cannot be degraded by laundering or heavy use. In the event of a thermal incident, the fabric carbonizes and thickens, creating a protective barrier between the heat source and the skin.
Features:
- Total 10 pockets / Compartments
- Two side pockets with coin divider
- Two back pockets with Velcro flaps
- Two expandable Cargo pockets with Velcro flaps and Pockets-in-Pocket feature
- Nickel zipper front closure
- 2″ waistband with elastic on side
- Eight belt loops
- Hidden reinforced seat patch
- Knee Patch
- Velcro leg tags
- Bar tacked at all stress points
Key Features & Construction:
Rugged Utility: Equipped with spacious, bellows-style cargo pockets with secure closures, allowing for easy access to tools, maps, and personal gear while wearing gloves.
Enhanced Durability: Features reinforced stitching at all high-stress areas and bartacked pocket corners to prevent tearing during intense physical activity.
Superior Fit: Designed with a relaxed cut to allow for a full range of motion—essential for navigating steep terrain or clearing brush.
Professional Specs: Includes heavy-duty belt loops, a high-quality FR zipper fly, and adjustable cuff closures to prevent embers and debris from entering the boots.
A great add to the Nomex cargo pants are the Nomex Wildland Yellow Shirts.
Yellow Nomex Wildland Fire Fighting Shirts
Whether you are managing a controlled burn or responding to an emergency, the GP.640 pants offer the reliable protection and functional storage required for long shifts in the field.
For more information on understanding the NFP 1977 please click the following link
Understanding NFPA 1977: The Standard for Wildland Firefighting Safety – Safety Protection Warehouse Canada
Built for the Grind, Certified for the Line: Nomex® IIIA Wildland Cargo Pants (GP.640) 🌲🚒
When you are out in the brush, clearing hot zones, and working demanding shifts, your lower body takes the brunt of the abuse. Standard work pants simply won’t cut it. The Nomex® IIIA Wildland Fire Fighting Cargo Pants (GP.640) are specifically engineered for heavy-duty protection, extreme physical durability, and superior thermal safety.
Why should you buy these pants?
The Gold Standard Fabric: Constructed from genuine 6 oz Nomex® IIIA, these pants are permanently fire- and arc-resistant. The protection is baked into the molecular structure of the fibers—it can never wear out, shrink, or wash out.
Massive 10-Pocket Utility: Storage isn’t an issue. Featuring a total of 10 pockets and compartments—including side pockets with coin dividers, back pockets with Velcro® flaps, and two expandable cargo pockets with a unique “pocket-in-pocket” design—you can keep your field tools, communication gear, and personal items secure and organized.
Reinforced Infrastructure: Built to survive brutal terrain. These pants feature a hidden reinforced seat patch, reinforced knee patches, and heavy-duty bar-tacking at every single high-stress point to prevent blowouts when crouching or climbing over deadfall.
Comfort & Fit Features: Includes a 2” waistband with side elastic for flexibility, a secure nickel zipper front closure, and adjustable Velcro® leg tags to cinch the cuffs tightly around your boots, keeping ash, embers, and ticks out.
What will it do for you? These pants eliminate gear failure from your list of worries. They allow you to move dynamically through rough backcountry terrain without tearing your clothes, while providing a reliable thermal barrier that shields you from extreme heat and unexpected ground-fire flare-ups.
Detailed Explanation of Safety Standards
The GP.640 Cargo Pants are meticulously tested and built to comply with strict Canadian safety standards, ensuring total compliance and elite defense on the job:
1. CAN/CGSB 155.20-2000 & CAN/CGSB 155.22-2014 Compliant
What it means: These are the rigorous national standards set by the Canadian General Standards Board (CGSB) for flame-resistant workwear. Specifically, CAN/CGSB 155.22 outlines the requirements for garments that protect against multi-hazard industrial fire and emergency exposures. To pass, the garment must not melt, drip, or continue to burn after the heat source is removed, and must maintain structural integrity when exposed to thermal stress.
How it helps you: This compliance guarantees that your pants will perform predictably under extreme emergency fire conditions. If you encounter flash flames or intense radiant heat from structural or wildland boundaries, the fabric won’t melt into your skin or propagate the flame, giving you the security required to maneuver out of danger.
2. ATPV 5.7 Cal/cm² (Arc Thermal Performance Value)
What it means: The Arc Thermal Performance Value measures the amount of incident energy a fabric can block before there is a 50% probability of a second-degree burn forming underneath it.
How it helps you: With a rating of 5.7 Cal/cm², the lightweight 6 oz Nomex® weave provides excellent, agile protection against electrical arc flashes. Because wildland operations often intersect with downed utilities or right-of-way power lines, this layer safeguards your lower body from the rapid, intense radiant heat of an electrical failure.
3. HRC 1 / CAT 1 Compliance (Hazard Risk Category)
What it means: Under NFPA 70E / CSA Z462 electrical safety frameworks, workplaces assess job hazards by category. Category 1 requires arc-rated clothing to have a minimum ATPV of 4.0 Cal/cm².
How it helps you: Scoring a 5.7 Cal/cm² clears the bar for Category 1 protection. This gives safety managers and contractors the exact compliance metrics they need for site access, while ensuring the wearer is fully protected against lower-to-medium risk thermal hazards without being weighed down by heavy, bulky fabrics.
Summary of Benefits to the Customer
The Nomex® IIIA GP.640 Pants deliver a masterclass in utility and resilience. By pairing CAN/CGSB flash fire standards with a 10-pocket design and heavy reinforcement, these pants maximize your storage, withstand relentless friction from brush, and ensure you remain fully protected and legally compliant across Canadian worksites.
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