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Men's FR Long John Underwear


Past season's style.  Made in the USA, the Flame Resistant Long John features merino FR wool and can be worn as an extra layer within a protective system or alone. This flame resistant base layer provides Category 1 protection and wicks moisture from your body to keep you warm, dry and comfortable.

    • ASTM F1506
    • NFPA 2112 UL Certified
    • ATPV Value: 8.6
    • NFPA 70E
    • Arc Flash Cat. 2
    • Breathable, Moisture control, Anti odor
    • Natural warmth from merinoFR™ wool
    • Front fly gusset
    • Logo print on left hip
    • Flatlock seams for reduced chafing
    • Style #: 1810005
    • 6.2-ounce, merinoFR™ Jersey
    • 55% Rayon, 33% Wool, 12% Nylon
    Product Care

    All Caterpillar Workwear items include a care instruction tag with specific details on how your product should be washed and treated. Please refer to the care instructions on the tag before washing any garment. In general, wash your cloths in cold to warm water with mild laundry soap. Tumble dry on low and do not overload your dryer for best results.