The Sitka Gear Core Lightweight Crew Shirt features long sleeves in a low-profile crewneck. The fabric with its polyester bi-component construction wicks away moisture and keeps you concealed when you're burning the boot leather. Permanent Polygiene Odor Control Technology neutralizes odor by stopping the growth of odor causing bacteria and fungi. The CORE Lightweight Series is the next-to-skin foundation for your high-exertion system. FeaturesMicro-grid interiorBrushed Inner FaceLow-profile Flat Lock Seam Construction