This flame resistant shirt is made from lightweight twill to keep you cool and comfortable. A relaxed fit gives ultimate mobility and movement, while the drop-tail provides extra coverage when bending over or crouching while wearing this Dickies shirt. The seams are tough and made to last with double needle stitching construction. In case of an emergency, durable snap front closures make this men's shirt easy to remove. The snaps on the cuff closure are also easy off and adjustable for personal preference. For pens or notepads, there is a left chest pocket with a convenient pencil division. This FR shirt features a two piece collar for better fit and shape. In a refinery or plant, there are standards for safety clothing. It has an ARC rating of 8.9 and an HRC rating of 3 and meets or exceeds several safety standards including: NFPA 70E, NFPA 2112. Material: Cotton, Nylon.