This is the flame resistant shirt you’ve been waiting for. Carhartt’s new, lightweight, breathable FR Shirt keeps you comfortable, compliant, and looking good! Too good to be true? We think not. The FR FORCE® Lightweight Long Sleeve Shirt backs up its claims with innovative features. Most importantly, this shirt is CAT 2 – ATPV 8.6 Cal/CM 2 and UL certified – NFPA 2112. It’s arc rated and NFPA 70E compliant, giving you and your workforce ensured protection on the job.