I took a small drive to local auto swap meet and came away with this, along with a few other goodies. I noticed the Japanese kanji on the ear cover and the back portion of the cap. Anyone have any idea what this cap was for? I know that most pilot caps have the leather Japanese star on the front forehead of the cap. This one does not.

The inside has black fur, which is beginning to fall out. There is also a makers tag on the inside which I have included photographs of. Any help would be appreciated.