Abstract: A ballistic resistant upper arm armor piece, for protecting the arm scye, thout restricting arm movement, includes a front lobe, a back lobe connected to the front lobe, and means such as an elastic strap with a hook and loop fastener, for securing the lobes to a user's upper arm so that a portion of the front lobe extends around a front portion of the user's torso and a portion of the back lobe extends around a back portion of the torso. The lobes have an upper edge and a lower edge, and together the lobes form a concave portion along the lower edge. The piece also includes means, on the upper edge of the lobes, for interconnecting the lobes to a garment worn by the user. The piece is constructed from a durable outer shell material, which encases an insert composed of multiple layers of ballistic resistant materials.