Optimized for warm weather performance, the Sitka EWS Shirt a lightweight stretch polyester in the body and arms for a quiet draw, silent snaps for quiet layering, mesh pits for ventilation, and complete Permanent Polygiene Odor Control Technology throughout. The ESW Shirt will be a reliable tool for the Whitetail hunter and can be worn on its own in the heat or as a foundation for layeRed insulation as autumn sets in.