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DRIFIRE® Range Flex Pro Relaxed FR/AR Work Pant

Premium Dual-Hazard FR/AR Protection: Arc Flash, Flash Fire, Breathable, Built-in Flexibility. Flex Canvas 9.05oz/322gsm - 14 CAL | CAT 2

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Since 1935, National Safety Apparel has been a leader in delivering advanced safety solutions for workers in high heat and industrial environments. NSA's extensive range of USA-made PPE includes protective workwear for workers facing extreme heat, arc flash, flash fire, molten metal, cut and abrasion hazards. Whether in foundries, mills or industrial manufacturing, NSA solutions are designed to safeguard workers in the toughest environments.

DRIFIRE® high-performance FR/AR work wear is built for those who demand both comfort and protection in tough environments. With innovative designs and advanced fabric technology, DRIFIRE® workwear works as hard as you do.

The same technology that keeps American troops safe abroad protects workers around the globe, helping workers to perform the most hazardous tasks with confidence. DRIFIRE® is mission-driven and performance-obsessed, delivering workwear that supports workers every step of the way.

APPLICATION: Arc Flash, Flash Fire, High-Risk Industrial Environments.

About DRIFIRE® FR/AR

Flex™ Canvas Shell (9.5oz / 322gsm)

Flex™ Canvas fabric is a high-performance, dual-hazard material engineered to balance rugged industrial safety with modern, ergonomic comfort. It is utilised in premium industrial workwear and transforms traditionally stiff canvas into highly mobile protective workwear.

DUAL-HAZARD COMPLIANCE AND PROTECTION

  • CAT 2 Protection: The fabric carries a certified ATPV of 14 cal/cm2, classifying it within PPE Category 2 for electrical safety.
  • Multi-Standard Safety: NFPA 70E, UL Certified NFPA 2112 for Flash Fire, ASTM F1506, CSA Z462, OHSA 1910.269.
  • No-Melt / No-Drip: The fabric properties ensure it will not melt, drip or ignite into a continuous burn when exposed to extreme thermal hazards.
  • Abrasion Resistance: The fabric offers three times the resistance to tears and punctures compared to standard cotton work canvas.
  • No-Wash-Out Security: The fabric's chemical and inherent FR structure guarantees that its flame and self-extinguishing properties will never fade, wash out or degrade over the entire operational life-cycle of the garment, no matter how many industrial launderings it undergoes. 

View more NSA FR/AR Work Pant Apparel by downloading the NSA 2026 Catalogue (Refer pages 21 to 23).

Download NSA Catalogue

Description: The DRIFIRE® Range Flex™ Pro Relaxed FR/AR Work Pant is the next evolution in the Range Flex™ Pant delivering performance without sacrificing comfort. Made from tough, flexible canvas, its built to handle demanding conditions while moving the wearer throughout the day.

  • NFPA 70E for Arc Flash, UL Certified to NFPA 2112 for Flash Fire, ASTM F1506 for Arc Flash, CSA Z462 for Arc Flash (Canada), OSHA 1910.269.
  • Fabric – Flex™ Canvas.
  • Fabric Weight - 9.5oz / 322gsm.
  • ATPV - 14.0 cal/cm2 PPE CAT 2.
  • Colours – Navy, Khaki.
  • COMING SOON
  • Product Number PNT-RFRU-NB-_ _X_ _ (Navy)
  • Product Number PNT-RFRU-KH-_ _X_ _(Khaki)
  • Modern Comfort: Durable canvas with built in flexibility.
  • Triple Needled Seams: Adds durability in areas where it counts the most.
  • Classic Relaxed Fit: The roomiest option for comfort and mobility, relaxed through waist, seat and thighs.
  • Reinforced Belt Loops: Added functionality and durability.
  • Reinforced Knife Clip Patch: Added functionality and durability, allowing you to conveniently clip a knife without causing tearing.
  • Double Layered Knees: Provides reinforcement in a high mobility area for demanding tasks.
  • Straight Leg: Allows for easy donning and doffing over work boots.
  • Gusseted Crotch: Improves mobility and reduces strain.
  • Angled Front Pockets: Allows for easy access, helping keep contents securely in place.
  • Rear Patch Pockets: Provide added storage for smaller objects.
  • Utility and Cargo Pockets: Maximises storage options, providing multi-functional storage for tools and personal belongings.
  • Sizes: Waist 30" - 50". Inseam 30" - 38".
  • MOQ - 10 units (across different sizes to reach MOQ).
  • Read the garment label and launder per instructions on garment label.
  • Machine wash warm on maximum 60°C (140°F). Use mild detergent. Tumble dry on medium setting.
  • DO NOT iron, use chlorine bleach, hydrogen peroxide, fabric softener or starch.
  • Wash according to the instructions above to remove any contaminants in order to maintain fabric performance when the garment becomes soiled with dirt, grease or oils.
  • If contaminants cannot be removed after laundering, it is best to discontinue use of the garment.