5.11 Tactical #41132 Poly/Rayon Short Sleeve B Class Uniform Shirt 64% Polyester/ 34% Rayon/ 2% Lycra Spandex Imported Plain weave; spread-collar Permanent military creases; patented hidden document pockets 5.9-oz, 64% polyester, 34% Rayon 2% Lycra spandex is Teflon treated for stain and soil resistance Triple-needle tailored; tough melamine buttons Bi-swing shoulder for a wider range of motion