Shop Unisex's at RalphLauren.com, the Official Site of Ralph Lauren. Slim-Fit Oxford Shirt - Cut for an ultra-trim fit, this sleek sport shirt is crafted from soft cotton oxford in classic colors. Medium-spread button-down collar. Applied buttoned placket. Long sleeves. Barrel cuffs. Split back yoke ensures smooth, contoured shoulders. Our signature embroidered pony accents the left chest. 100% cotton. Machine washable. Imported.