Port Authority Trace Heather Polo. K576Breathe new life into your office look with this active-inspired, heathered performance polo that wicks moisture and resists snags., 4.5-ounce, 100% polyester, Self-fabric collar, 3-button placket with dyed-to-match buttons, Open hem sleeves, Side vents, Due to the nature of 100% polyester performance fabrics, special care must be taken throughout the printing process.