Shop Girls's at RalphLauren.com, the Official Site of Ralph Lauren. Big Pony Polo - This classic long-sleeved polo shirt is crafted from soft cotton mesh and finished with our signature embroidered Big Pony. Ribbed polo collar. Four-button placket. Long sleeves with sewn cuffs. Uneven vented hem. Our signature embroidered Big Pony accents the left chest. 100% cotton. Machine washable. Imported.