Shop Baby's at RalphLauren.com, the Official Site of Ralph Lauren. Striped Cotton Polo Shirt - This soft cotton polo shirt features a bold striped pattern and our signature embroidered pony. Ribbed polo collar. Two-button placket. Short sleeves with ribbed cuffs. Uneven vented hem. Our signature embroidered pony accents the left chest. 100% cotton. Machine washable. Imported.