Shop Boys's at RalphLauren.com, the Official Site of Ralph Lauren. Half-Zip Mockneck Pullover - This classic half-zip pullover is crafted from warm cotton and features our signature embroidered pony. Ribbed mockneck. Half-zip placket. Long sleeves with ribbed cuffs. Ribbed hem. Our signature embroidered pony accents the left chest. 100% cotton. Machine washable. Imported.