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.Measuring Tips:Waist: Measure around your waistline where you normally wear your pants. Keep a finger between your body and the measuring tape for an accurate fit.