Shop Unisex's at RalphLauren.com, the Official Site of Ralph Lauren. Mesh Polo Shirt - The lightweight Mesh Polo Shirt is finished with our signature embroidered pony. Ribbed polo collar. Applied two-button placket. Short sleeves with ribbed armbands. Uneven vented hem. Our signature embroidered pony accents the left chest. 100% polyester. Machine washable. Imported.