Jockey Men's Underwear Sport Mesh No-Fly Urban Brief 92% Nylon/ 8% Spandex. Lining: 100% Cotton. Machine wash and dry. Imported Style 10449 keep cool while performing your best with our sport mesh no-fly urban brief underwear for men breathable mesh panels in this men's no-fly urban brief provide extra airflow urban briefs have an ultra-smooth, quick-dry microfiber fabric no-fly construction underwear provide maximum support