The Helly Hansen Fargo 2.0 Flame-Resistant Undergarment Pants are engineered as a protective base layer to be worn under arc-rated and flame-resistant outerwear. Constructed from a 295 g/m² blend of aramid, viscose, and antistatic fibers, they offer inherent FR protection without compromising comfort. The fabric’s natural moisture-wicking properties help regulate body temperature and keep skin dry throughout the workday. Flatlock seams prevent chafing, and the elastic waistband ensures a flexible fit under coveralls or pants. When paired with the Fargo 2.0 Crewneck and matching accessories, these undergarment pants form a complete FR protection system from head to toe.

Key Features

Flame-resistant undergarment: Designed for use beneath FR outerwear for layered protection.
Inherent FR performance: Fabric blend retains protective properties throughout garment life.
Moisture management: Wicks sweat to help maintain skin comfort in warm or active conditions.
Flatlock seams: Reduce friction and enhance comfort under coveralls or PPE.
Elastic waistband: Provides secure fit and ease of movement.
Soft hand feel: Comfortable against the skin for extended wear.
Layering system: Integrates with the Fargo 2.0 Crewneck and accessories for full-body coverage.

Intended Use

Ideal as a base layer for workers exposed to thermal and arc hazards requiring Category 2 FR protection.

Electrical utilities and power generation
Oil & gas and petrochemical plants
Mining and heavy industry
Maintenance, repair, and operations (MRO)
Construction and fabrication
Transportation and infrastructure services

Product Specifications

Model No.: 75491
Product Type: Flame-retardant base-layer pants
Fabric Weight: 295 g/m²
Material: 48.5 % Aramid / 48.5 % Viscose / 3 % Antistatic
Seams: Flatlock construction
Waistband: Elastic
Fit: Next-to-skin base layer
Compatibility: Fargo 2.0 Crewneck and accessories

Certifications and Standards

NFPA 2112-2023 – U.S. standard for flame-resistant garments used in industrial protection.
ASTM F1506-2020a – Specifies textile performance for electric arc protection.
CAN/CGSB-155.20-2017 – Canadian flame-resistant clothing standard.
Arc Flash Category 2 – ATPV 9.2 cal/cm² | Ebt 8.3 cal/cm² | HAF 79 %.