These are Baker pants from the US military. The zipper is a square-shaped semi-automatic TALON, so they are likely from the 70s or 80s. The size is as follows (please allow for measurement errors): Waist: 36cm Rise: 31cm Inseam: 67cm Leg opening: 22cm These are vintage, so there are stains and damage on the hem and back pockets, etc. If you would like to see other areas, please let me know in the comments.