Port Authority Ladies' Moisture Wicking Performance Short Sleeve Polo Shirt 100% Polyester Lightweight and breathable, this moisture-wicking shirt has a pleasing drape, subtle jacquard texture and an open placket for feminine style. 3.8-ounce, 100% polyester Self-fabric collar Open hem sleeves *Due to the nature of 100% polyester performance fabrics, special care must be taken throughout the screen printing process.