Vertx Shirts are designed to help you perform at your absolute best. We have a large selection of Tactical Shirts that fit any style and are at the same time practical for on or off duty wear. Tactical Shirts by Vertx are to help you perform at your absolute best. Vertx Tactical Shirts sold here range from lightweight short-sleeve casual shirts, Vertx Polo Shirts and button-ups, to high-tech form-fitting engineered shirts designed to eliminate friction and reduce muscle fatigue. These Performance Shirts have special features like extra pockets, vents, hidden compartments and are designed to help you get through the toughest situations, while keeping you cool and dry.