Take an extra 20% off U.S. Polo Assn. Memorial Day Sale styles with promo code “USA20”. T-shirts start at $8 after the coupon. We’ve pictured the U.S. Polo Assn. Men’s Interlock Polo Shirt for $16 after the code ($32 off). All orders ship free. Sale ends May 28, 2026. Buy Now at U.S. Polo Assn.