Used Brown leather, with the two side straps removed but snap fastener still present. The back seam has been sewn shut. Inside swede lining show some use and darkening. Inside marking number 5 (Large size) and what looks like NATIONAL HAT 1942 ?????. Also marked C Broad Arrows over number 214. Shows heavy used and some slight peeling spots but no tears or holes. Nice well used flying helmet and dated.