Shop Baby's at RalphLauren.com, the Official Site of Ralph Lauren. Cotton Mesh Polo Shortall - Crafted from breathable cotton mesh, this cute polo shirt-inspired shortall features our signature embroidered Big Pony. Ribbed polo collar. Two-button placket. Short sleeves with ribbed armbands. Applied "3" patch accents the right sleeve. Ring snaps at the hem ensure easy on and off. Our signature embroidered Big Pony accents the left chest. 100% cotton. Machine washable. Imported.