Shirt is constructed with indura fabric, which is guaranteed flame-resistant for the life of the garment. The non-conductive black plastic snaps make it easy to get in and out of the shirt quickly. The lapco flame-resistant tag ensures that you ll stay safe when you re wearing this shirt. The shirt is extra sturdy with four rows of lock stitching on the front placket. Double-needle stitching on the pockets, flaps, and shoulder seams add even more durability to the shirt