U.S. Polo Assn Orange Polo Shirt – Size M Bright orange short-sleeved polo shirt by U.S. Polo Assn. Features a navy embroidered USPA double-horse logo on the chest, a collared neckline with button placket, side splits, and a number 3 appliqué on the sleeve. Tagged size M. Measurements taken lying flat: Underarm to underarm: 43 cm Length: 54 cm Please compare the measurements with a similar garment for the best fit.