Heavyweight FR Thermal Pants (FR4)

Heavyweight Flame Resistant Thermal Pant - FR Phase 4 This is our warmest FR option. Available in many styles and accessories. Great alone or as a top layer piece for extreme warmth. Great next-to-skin feel and a full generous cut for comfort. Our FR is inherent and built-in at the yarn level, meaning it won't wash out and provide no melt/no drip protection for the life of the garment. Acclimate® Dry moisture management and Ag47® anti-microbial/anti-odor will keep comfortable, dry and odor-free. Utilizing Clean Seam® flat-seaming to provide a comfortable seam next-to-skin helps reduce the risk of friction and irritation.  Gear Specs Fabric: a Patented Blend of Modacrylic & FR Rayon Inherently No Melt/No Drip At Yarn Level - FR Protection For Life Of Garment ASTM D6413 No Melt/No Drip FR Standard Weight: 8.5 oz./sq. yd. / 240 grams Sizing:  Men's Sizing/Fit Fit: Regular/Relaxed Fit  Features Acclimate® Dry Moisture Management (Superior Wicking / Drying) Ag47® Anti-Microbial