U.S. Polo Assn. Baby Boys' Iconic T-Shirt with Plaid Short 100% Cotton Imported Machine Wash Established in 1890, the U.S. Polo Assn. is the governing body for the sport of polo in the United States. Indulge yourself in the iconic sophistication, luxury and comfort that the U.S. Polo Assn. products provide. You deserve the best. T-shirt has rib knit neckline with iconic branding Plaid short has four pockets, zip fly and elast back waistband