I’m 5’ 7” 121 lbs and the size small is pretty fit. I used this on several occasions where temps ranged from 30°-60° and I actually overheated a bit but when standing around camp or inactive it got pretty cold. The inner side of the jacket is this soft warm felt-like fabric and the outer is pretty close to a softshell. It’s a perfect midlayer in chilly weather.
This review was written in the old system and had content requirements that are different than reviews written today.