Sport-Tek Contrast PosiCharge Tough Polo . ST620Smooth, durable and made to perform, this moisture-wicking, snag-resistant polo has earned its tough reputation., 4.7-ounce, 100% polyester jersey with PosiCharge technology, Self-fabric collar, Tag-free label, Contrast tech taping at center back neck, 3-button placket with dyed-to-match rubber buttons, Set-in, open hem sleeves, Contrast tech taping at sides