Shop Baby's at RalphLauren.com, the Official Site of Ralph Lauren. Cotton Half-Zip Sweater - This cozy cotton sweater features a half-zip front and our signature embroidered pony. Mockneck. Half-zip front. Long sleeves with ribbed cuffs. Ribbed hem. Our signature embroidered pony accents the left chest. 100% cotton. Machine washable. Imported.