The Carhartt FR Force Lightweight Long Sleeve Shirt is a 4.7 oz. FR work shirt rated 8.6 cal/cm2 (CAT 2), built for crews who need breathable upper-body protection in hot, high-output, and indoor-outdoor work conditions. Its 50% Lenzing FR, 38% aramid, 10% polyamide, 2% antistat blend and honeycomb weave engineered for added breathability keep the shirt in the lightweight category while still delivering CAT 2 coverage. This shirt meets ASTM F1506, is tested to ASTM D6413, is NFPA 2112 compliant, and is NFPA 70E compliant, giving safety managers the core arc-flash and flash-fire standards they usually need to verify before approving a daily-wear FR shirt. ASTM F1506 is the governing ASTM standard for flame resistant clothing, and garments that meet it comply with NFPA 70E (Standard for Electrical Safety in the Workplace). Carhartt builds this shirt with moisture wicking, odor resistance, easy-care wrinkle resistance, anti-stat performance, and a Tradesman double-layer left chest pocket with back closure. The loose fit and the availability of Small through 4X-Large in Regular and Long lengths make it easier to wear over an FR T-shirt or base layer without pushing the shirt into outerwear territory. It is also offered in Dark Khaki, Gray, Navy Blue, and Steel Blue, which helps uniform programs match site color standards. For care, follow the garment label, wash warm or the hottest label-approved setting when heavily soiled, tumble dry low or line dry to limit shrinkage, and never use bleach. Those steps matter because bleach can degrade FR characteristics, and properly cared for, this shirt maintains its flame resistant properties for the useful life of the garment. Imported by Carhartt, it fills a specific gap for wearers who want a lightweight FR work shirt with CAT 2 protection instead of a heavier FR shirt or a knit FR tee.