Combines the durability and protection of a tactical jacket with the comfort of a t-shirt giving first responders a more comfortable top to wear under their body armor and vests. The 24-7 Series Responder Shirt's body is constructed from state of the art drirelease fabric that regulates skin temperature, providing a 7-degree cooler body than other fibers or treatments of the same weight and treated with environmentally friendly FreshGuard treatment for a built-in natural odor neutralizer system to prevent bacteria growth. The sleeves and yoke are constructed from durable polyester-cotton rip-stop for abrasion resistance and professional appearance.