Military base ball hat size M

US Military unknown hat size M 

in good condition no rips or no holes 

plz look at photos for yourself on condition 

This used item  No holes No rips few marks 

Plz note your buying the cap /hat you see  only other items are display items  and NOT included in this sale

Sold as seen ,as is ,voetstoots 

please look at my other item 

Some unless information ( I am unsure with country this  pattern belongs  looks like strong US 

military style,the air vests are very low ,so I think they was for chin straps more than air vents 

the hole in front was for a badge or rank I seen them before it written in side 1977 I think 

its South Korean , Vietnam, that side of the world so selling it as cheap as chips ) 

if you know let me know I would appreciate it )