Abstract: A short- or long-sleeved upper garment with a high degree of freedom of articulation, in particular for the sport shooting and hunting sector. The upper garment has a one-piece back part with a vertical central area covering the back and the shoulder area of a person. The back part has laterally left and right projecting arm sections respectively with a Top side with a laterally outer End point and a Bottom side with a laterally outer End point. The laterally outer End points of the left and right Top sides respectively coincide with the End points of the left and right Bottom sides respectively. This makes it possible, among other things, to avoid or at least reduce tensions introduced into the back part by arm and shoulder movements and to increase wearing comfort.