Port Authority Dry Zone Grid Polo. K572With a grid-like texture, this durable, smartly priced polo wicks moisture and controls odor--making it a favorite for team uniforming., 4.28-ounce, 100% polyester, Flat knit collar, 3-button placket with piping detail, Dyed-to-match buttons, Side vents, Due to the nature of 100% polyester performance fabrics, special care must be taken throughout the printing process.