Whether it's caused by the heat of the day or the high pressure of the situation, a moisture-soaked shirt detracts from your comfort, efficiency and professionalism. The 24-7 Series® Performance Polo includes all the features of the original 24-7 Series® Polo, but it is manufactured from a special jersey knit 100% polyester fabric that keeps you feeling good and looking dry all day long. The fabric is USA-made and the shirt is GSA approved.