It looks like an agricultural cooperative cap that an old man in the countryside might wear.
This cap is typical of a manufacturer of agricultural and gardening work wear, with patches and embroidery added to the body cap.
MOW means to mow. I added the kanji for ``harvest'' to it and made it into a pun that means ``profitable''.
"MOW mowing" on the front part
The brand logo ``HARVESTA!'' is embroidered on the side, and ``MOW!'' is embroidered on the back.
Body: Polyester65%, Cotton35%