Shop Men's at RalphLauren.com, the Official Site of Ralph Lauren. Custom-Fit Mesh Polo Shirt - This short-sleeved polo shirt is made from soft cotton mesh and tailored for a trim, modern fit. Ribbed polo collar. Two-button placket. Short sleeves. Ribbed armbands. Uneven vented hem. Our signature embroidered pony accents the left chest. 100% cotton. Machine washable. Imported.