Men's Fire Resistant Base Layer Pants

Polartec PowerGrid® FR fabric wicks moisture off skin and insulates with 312-gram arctic-weight construction while a Windpro® fly keeps the north wind from chilling you down south.

Flame Resistant Base Layer

Stanfield's Men's Long Johns FR21 CSA HRC 1 Kermel/Lenzing Flame Resis

Personal Protective Equipment - Flame-Resistant and Arc Flash

Flame Resistant Nomex Base Layer Thermal Bottom, FREE

Duluth Trading Co. Fire Resistant Base Layer Pants Black Mens

Chicago Protective Apparel CX-55 CarbonX Ultimate Baselayer P

Drifire DF2-CM-446LP FR Lightweight Flame Resistant Long Unde

Woolpower LITE Merino Long Johns - Flame Resistant Protection

Military Fire Resistant (FR) Clothing

Men's Summit Base Layer Pants

CORDOVA Base Layer Pant in Ecru

Burton Midweight Base Layer Pant - Men's

Sport Stripe Base Layer Pant

Men's L.L.Bean Lightweight Base Layer Pants