FR Materials Lightweight: 5.5 oz knit featuring flame-resistant treated cotton, stitched with FR aramid threads. Eye-catching "FR" tag on the pocket. We’ve included a small sample inside the package so customers can try the flame resistance properties themselves. Fashion and comfort: This FR work shirt offers a perfect and comfortable fit—soft and stylish. We’ve pre-washed and pre-shrunk the shirt to prevent shrinkage or distortion after washing. It’s also wrinkle-free, making it easy to maintain a neat and professional look. Ensure Safety at Work: Our FR shirt is designed to prioritize safety in the workplace. It meets or exceeds the standards for HRC2/CAT2 and has an Arc Rating ATPv of 8.0 calories per cm². It also complies with the requirements of the NFPA 2112 Standard on flame-resistant garments for protecting industrial personnel from flash fires, 2012 edition. Classified under NFPA 2112, NFPA 70E, and ASTM F1506. Multi-purpose: Designed for welders, fitters, ironworkers, electricians, and other industrial workers—even at home. It can be used for any kind of industrial and construction work. Our workwear protects you every day and helps you perform heavy tasks. More Usage Time: Up to 100 washes. Our shirts have the appropriate level of protective gear and remain secured through multiple washes. You can wear and wash it repeatedly up to 100 times before the fragrance still works. NFPA 2112, ASTM F1506, CAT II)