Shop Baby's New Arrivals For Baby Boy at RalphLauren.com, the Official Site of Ralph Lauren. Plaid Cotton Poplin Coverall - Crafted from cotton poplin, this preppy plaid coverall is accented with our signature embroidered pony. Button-down point collar. Applied buttoned placket. Long sleeves with buttoned barrel cuffs. Pleated back yoke guarantees a comfortable fit. Ring snaps at the hem ensure easy on and off. Our signature embroidered pony accents the left chest. 100% cotton. Machine washable. Imported.