Shop Boys's at RalphLauren.com, the Official Site of Ralph Lauren. Plaid Cotton Poplin Shirt - Crafted from crisp cotton poplin, this classic button-down shirt features a colorful plaid pattern and our signature embroidered pony. Button-down point collar. Applied buttoned placket. Long sleeves with buttoned barrel cuffs. Split back yoke with a box pleat ensures a comfortable fit. Our signature embroidered pony accents the left chest. 100% cotton. Machine washable. Imported.