Comfort, style and FR protection come together in the Carhartt Flame-Resistant Chambray Shirt. The blend of 88% cotton, 12% high tenacity nylon make the 6 oz. FR chambray fabric durable and meets NFPA 70E standards. All buttons are made with FR melamine allowing the button down collar and two-button adjustable cuffs to help you find the best fit possible while staying in compliance. This Carhartt FR shirt also features triple stitched main seams for added durability and a left chest pocket with flap for all your storage needs.