Shop Baby's at RalphLauren.com, the Official Site of Ralph Lauren. Plaid Cotton Polo Shirt - Crafted from soft cotton, this sweet polo shirt features a cheerful plaid pattern and our signature embroidered pony. Soft polo collar. Three-button placket. Short sleeves with sewn cuffs. Even vented hem. Our signature embroidered pony accents the left chest. 100% cotton. Machine washable. Imported.