Unissued US Military surplus jackets, The M-51 army jacket was made from 1951 to 1964 (it was then replaced by the iconic M-65).
True to the USA SIZE !! 
Best known as the field jacket worn by US forces during the Korean War. It has long established itself as one of the most popular and functional field jackets among civilians.
The Korean-era Style M-51 Field Jacket features:
- Ultra durable & wind resistant 50% cotton/50% nylon outer shell
Bi-swing back
- Two snap flapped cargo pockets
- Two snap flapped chest pockets
- Concealed hood in collar
- Drawstring adjustable waist & bottom
- Button down epaulets
- Velcro adjustable cuffs
- Snap closure storm flap
- Heavy duty zipper
- Interior buttons for liner attachment
- Fit: Military (Trimmer in shoulders and torso. For a more normal size or if you have broad shoulders, order a size larger.)