Deck Cap, Flight Cap Liner? Lost On This One

[J Hardy]

Found the cap mixed in with German, Italian & U.S. items... Really lost on this one - any help is greatly appreciated!

[J Hardy]

Any Ideas?

[Dennis S]

Civilian type cold weather liner to be worn under a construction hard hat (safety helmet)

[Dennis S]

Yours of course is more vintage but here are similar ones.

The buttoned cloth tabs are for mounting on the inside adjustable liner.

[Dennis S]

Vintage one

[Dennis S]

From your neck of the woods