Shop Girls's at RalphLauren.com, the Official Site of Ralph Lauren. Stretch-Cotton Polo Shirt - This preppy polo shirt is crafted from stretch cotton mesh and features our signature embroidered pony. Ribbed polo collar. Five-button placket. Short sleeves with ribbed armbands. Uneven vented hem. Our signature embroidered pony accents the left chest. 98% cotton. 2% elastane. Machine washable. Imported.