WWII Japanese Navy Summer Field Cap-This is produced in black heavy duty cloth. There is a strip of white cloth around the skirt (we believe this is for an NCO). Each side has three ventilation holes. The insignia was removed at some point. There is a cloth bill and chinstrap. The interior is unlined. There is a section of the same material used as a sweatband. There is a cloth tag stitched to the interior with lots of Japanese writing. It is a small size. Excellent!