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