Details & Sizing With its genuine mother-of-pearl buttons and spread collar, this cotton Polo piece is an elevated take on the iconic oxford. Classic Fit: a comfortable, relaxed silhouette. Size medium has a 311⁄2" body length, an 181⁄4" shoulder, a 46" chest, and a 341⁄2" sleeve length. Sleeve length is taken from the center back of the neck and changes 1" between sizes. Medium-spread collar. Signature "Polo Ralph Lauren" collar stays. Buttoned placket. Last buttonhole is stitched horizontally for a superior hold. Signature genuine mother-of-pearl buttons. Long sleeves with buttoned barrel cuffs. Pleated back yoke ensures smooth, contoured shoulders. 100% cotton. Machine washable. Imported. Model is 6'1"/185 cm and wears a size medium. Style Number: 428848