Shop Girls's at RalphLauren.com, the Official Site of Ralph Lauren. Cotton Long-Sleeved Polo Shirt - This essential long-sleeved polo shirt is crafted from breathable stretch cotton mesh and features our signature embroidered pony. Ribbed polo collar. Four-button placket. Long sleeves. Uneven vented hem. Our signature embroidered pony accents the left chest. 98% cotton. 2% elastane. Machine washable. Imported.