• I am 5'2" and 125 with muscular shoulders. I wear the medium with a sweater underneath and it is perfect. The jacket fits perfectly in the arms and body. I get SO many compliments on the teal blue color. I highly recommend this jacket.
    Answered on 1/3/2017 12:23:12 PM by trailrunner from opelika
  • I'm 5'7" and 122# and not too much bust and fairly thin arms. I just tried on the jacket while wearing a heavy sweat & a lightweight down jacket and although it was a lot of clothes I could easily zip up the front and bend my arms. With just the sweater or down jacket it's comfortably roomy for me.
    Answered on 1/3/2017 12:28:12 PM by janieB from San Francisco.
  • If you hover your mouse over or click on the sizes the corresponding numeric size will be displayed.
    Answered on 1/3/2017 1:30:31 PM by Product Specialist Greg from Sierra Trading Post
  • If you like wearing a substantial layer under your jacket, I'd suggest that you order an M. Marmot's jackets are pretty trim-cut; and I made a mistake earlier ordering an M -- my usual jacket size. I could get it on -- but just barely -- and only over a thin shirt. Going for an L with the Julia jacket has allowed me to layer up, with room to spare!
    Answered on 1/3/2017 5:56:05 PM by Ethics Prof from Maryland
  • I am 5'7" and 130 # and wear S or M also. But I bought M as I also wear more under my jacket. I had a long sleeve shirt and fuzzy fleece jacket under, and it had right amount of room. If you plan to wear more under, it is good to go with M especially if you live in a cold place. If you just plant to wear a tank or t-shirt to go for a workout, M would be too big. Also, the bottom of my jacket comes to my hip. Even if zipped, M is a little big and cold air comes in unless I wear more. I wear size 2-4. So if you have smaller waist, that is something you may want to consider also.
    Answered on 1/4/2017 7:55:54 AM by JG from Colorado