DetailsSize medium has a 24" body length.Crew neckline.Mesh cap sleeves."Polo Sport" graphic rubber-printed at the center back of the neck. "ThermoVent" graphic at the back left hem.Shell: 90% nylon, 10% elastane. Mesh sleeves: 75% nylon, 25% elastane.Machine washable.Imported.Model is 5'10"/178 cm and wears a size small.Ralph Lauren is proud to be an official sponsor and the official outfitter of the US Open.