BUILT FOR ALL-DAY COMFORT: Made by 6oz midweight heather cotton blend FR jersey knit(92% cotton,8% tencel), this shirt delivers natural moisture-wicking performance with a soft, breathable feel.A full bird's-eye mesh back panel increases airflow across the entire back, while underarm mesh panels to release excess heat, keeping you cool, dry, and comfortable during long summer work hours in work environments. BUILT WITH FUNCTIONAL STYLE: Designed with a three-button placket, relaxed fit and tagless collar for irritation-free wear.Left chest pocket for convenient storage. Raglan sleeves provide unrestricted movement, while the rib-knit collar and cuffs ensure a secure fit. The extended front and back hem offer added coverage when bending, reaching, or working overhead. BUILT FOR SAFETY: This flame-resistant shirt meets or exceeds HRC2 with an Arc Rating (ATPV) of 8.0 cal/cm².It is compliant with NFPA 2112, NFPA 70E, and ASTM F1506 standards, providing dependable protection in work conditions. BUILT TO LAST: Pre-shrunk for consistent sizing and long-lasting performance, machine wash warm at a temperature below 165°F(76°C), FR fabric that holds its shape and softness through repeated washing, maintained up to 100 washes before FR still works. BUILT FOR UTILITY WORK WEAR: More than just a worksite essential, our shirt provides protection and comfort for welders, fitters, ironworkers, electricians, and other industrial professionals.It layers easily under a men's work jacket or coat to keep you comfortable in all seasons and work environments.