This is made by gi contractor, by rn # in label. Gibraltar a gi contractor, this jacket is made feels like nyco nylon cotton, same as gi issued original fabric. So specifications in size are the same, fabric and size. BRASS zippers are us made in hideaway hood, looks like ideal, front zipper looks like scovill.
Made usa i believe is early 80's to sell to army navy stores or to fashion stores in europe or japan. Arm pit to arm pit 22" top of neck to bottom of jacket =34". Original use by army had a uniform underneath so can fit a snug medium as well.