Shop Baby's at RalphLauren.com, the Official Site of Ralph Lauren. Big Pony Half-Zip Pullover - This sporty half-zip pullover is knit from soft cotton and features our signature embroidered Big Pony. Mockneck. Half-zip front. Long sleeves with contrasting ribbed cuffs. Two intarsia-knit stripes around the right arm and an applied "3" patch. Ribbed hem. Our signature embroidered Big Pony accents the left chest. 100% cotton. Machine washable. Imported.