Benchmark FR 1028FRLG-XL Men's Flame Resistant Button Front Cotton Shirt, Dual Hazard, HRC 2, NFPA 2112,&nbsp;Light Gray, X-Large Long-sleeved button-up shirt with collar 6.8-oz. flame-resistant twill fabric for protection against flame and arc flash 100% cotton Double-stitched seams for strength High-temperature Melamine closures for safety