Shop Unisex's at RalphLauren.com, the Official Site of Ralph Lauren. Cotton Short-Sleeved Polo - This classic polo shirt is crafted from soft cotton mesh and features ruffled trim and our signature embroidered Big Pony. Ribbed polo collar. Four-button placket with ruffled trim. Puffed short sleeves with sewn cuffs. Even vented hem. Our signature embroidered Big Pony accents the left chest. 100% cotton. Machine washable. Imported.