Could be men's or women's (I am thinking this was originally a men's jacket because I usually wear a women's large and this is too large on me)

Blue denim with a sherpa lining - sleeves are NOT sherpa lined (red material in photos)

Buttons (not snaps)

When closed and laying flat underarm to underarm it is approx 23" across

Top of shoulder to bottom hem is approx 22"

Bottom hem across is approx 20"

This was just washed today but I did NOT put it in the dryer...didn't want it to shrink.  So, since it air dried it may feel a little stiff when you first put it on.

Sleeves have white "fold" marks - perhaps the way it was stored once upon a time