Shop Unisex's at RalphLauren.com, the Official Site of Ralph Lauren. Big Pony Cotton Polo Shirt - This preppy polo shirt is crafted from soft cotton mesh and features our signature embroidered Big Pony. Ribbed polo collar. Applied two-button placket. Long sleeves with ribbed cuffs. Applied twill "3" at the right arm. Uneven vented hem. Our signature embroidered Big Pony accents the left chest. 100% cotton. Machine washable. Imported.