Shop Girls's at RalphLauren.com, the Official Site of Ralph Lauren. Cotton Polo Shirt - The classic long-sleeved Cotton Polo Shirt is designed with a hint of stretch and our signature embroidered pony. Ribbed polo collar. Four-button placket. Long sleeves with sewn cuffs. Uneven vented hem. Our signature embroidered pony accents the left chest. 98% cotton. 2% elastane. Machine washable. Imported.