I'm 5'9, 135 and I got a medium. It fit until I washed it a few times and the arms shrunk about an inch and a half. I returned it. I have long arms and hate it when the arms on things are too short.
I love this jacket. It is very comfortable and nice and warm. It is exactly what I was looking for. The only problem with it is that it is a light color and needs washed often. But I picked out the color and made that choice-I woudn't say it is a defect. So if you don't like to do laundry go with a darker color. Otherwise it's the best fleece jacket I own...and I have a lot of jackets.
I've been looking for the perfect fleece jacket and this is it! I'm 5'9" 135 lbs. and the medium fits great! I have a hard time finding jackets/shirts with long enough sleeves but this did the trick. The color is nice and bright and the jacket super comfy! I would totally recommend it! Thanks Backcountry for helping me to find na jacket I love!
I have an Arc'teryx rain jacket that fits perfectly. But not this jacket. It was too short in the arms and short to my waist. I was bummed. But Backcountry did and amamzingly fast exchange and helped me to order something I am happy with.