Extremely well-made reproductions, nearly indistinguishable from originals. Pocket patches were applied to M41 jackets, jump jackets or flight jackets, usually on the left breast. However, this varied a bit from unit to unit- so if historical accuracy is important, it's best to research the specific it. Machine-embroidered on twill or wool, or hand-sewn bullion. Regimental pocket patches were usually applied to secondary jackets (like "tanker" or privately-purchased flight jackets); sewn to the left breast.