To style a men's short sleeve polo shirt, pair it with slim-fit chinos or tailored shorts for a smart-casual look. Choose classic colours like navy, white, or black for versatility. For a relaxed vibe, match with well-fitted jeans or casual trousers. Complement the outfit with loafers, boat shoes, or clean trainers. Avoid excessive accessories; a simple watch or bracelet will suffice. Tuck it in for a polished appearance or leave it untucked for a more laid-back feel. Ensure the fit is snug but not too tight to maintain a neat silhouette.