Army Black Knights Men's Champion Tonal Stripe Short Sleeve Polo. This Army 92% Polyester/8% Spandex with tonal stripe polo features a 3 button placket with a self stand collar and side vents for additional movement. This Black Knights Polo has an embroidered logo on the left chest and features sleeves and bottom hem with standard finish. Show off your Black Knights pride and dress to impress on the course or at your next tailgate. Go Black Knights!! Officially licensed Army Black Knights fan gear.