Shop Unisex's at RalphLauren.com, the Official Site of Ralph Lauren. Cotton Mesh Polo Shirt - This classic polo shirt is crafted from soft cotton mesh and finished with our signature embroidered pony. Ribbed polo collar. Two-button placket. Short sleeves with ribbed armbands. Uneven vented hem. Our signature embroidered pony accents the left chest. 100% cotton. Machine washable. Imported.