Shop Men's at RalphLauren.com, the Official Site of Ralph Lauren. Performance Mesh Polo Shirt - Crafted from a moisture-wicking blend, this sporty polo shirt features a diagonal stripe at the front and the back and our signature embroidered pony. Ribbed polo collar with striped tipping. Two-button contrast-facing placket. Short sleeves with ribbed armbands. Diagonal stripe across the front and the back. Even vented hem. Our signature embroidered pony accents the left chest.