I agree with the previous person who posted; it's really thin. It's also very light weight, feels like nothing. I was expecting something a little more insulated, but it gets the job done when it comes to campus life and the unpredictable rainy Oregon weather. I'm 5'5", approx 120 lbs, slightly longer torso and Asian/small build and ordered the XS. I wasn't able to try on a jacket prior to buying it, so I was surprised by how short the jacket is as it only comes down to the top of my hips. One problem I do have with the jacket is the length of the sleeves (I have this problem with most TNF items, so maybe it's just me and my arms); the XS fits fine in the torso but the sleeves are always short (comes down to the bony point of my wrist). The sleeves of S are longer but the rest of the jacket is huge. The jacket is also boxy looking until you cinch in the bottom. The XS was roomy enough for me to wear TNF Pumori fleece jacket underneath (but the Resolve is not a zip-incompatible item). In retrospect, the size S might have been a better choice, since no one likes wet, cold hands when it's raining.

TNF pumori is an excellent jacket. Warm, soft but not wind or water proof, though. Perfect for fall and winter campus life in the Northwest (with an umbrella!).

I'm 5'5", about 120 lbs, small frame, slightly longer torso, and I ordered both the XS and S to compare. I found the S to be too wide, especially around the underarms and shoulder, but the sleeves were perfect. The XS fits much better, but the sleeves were too short (comes down to bony part of my wrist); this problem was easily solved by layering the XS over any hoodie or sweatshirt or t-shirt with longer sleeves.

The Pumori jacket length is longer than the TNF Apex Bionic, Windwall 1 & 2 jackets, and the back is approx. 1.5 inches longer at the longest point.

I'm 5'5'', 115 lbs, and of Asian heritage/small frame, and I purchased the jacket in a small. It's still rather loose around the arms, chest and the rest of the torso, making the jacket appear bulkier than it really is, so I'm exchanging it for the XS. Other than that, it's a great jacket and can't wait until I get it.