Shop Men's at RalphLauren.com, the Official Site of Ralph Lauren. Slim-Fit Mesh Polo Shirt - This iconic polo shirt is crafted from durable cotton mesh and designed with our modern slim-fitting silhouette. Tailored closer to the chest and waist than the�Custom Fit, with slimmer arms and a shorter hem. Ribbed 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.