5.11 Tactical #46119 Men's Fire Resistant FR-X3 Short Sleeve A Class Station Shirt (Fire Navy) cotton 5.5 oz Poplin - 88% Cotton/12% Nylon Milliken Amplitude Certified to NFPA 1975-2009 Standard Wrinkle, Shrink and Fade Resistant Concealed snap front placket Stitched in creases