I love this sweater! I've been wearing it all around the house and I've taken it running once so far...I can't get enough of just wearing cozy clothes all day that I can just take out for a run.
I ordered the white/black in size XS -for reference I'm 5'0" and about 100lbs.
As mentioned in other reviews, this is NOT white, it is a light grey. That wasn't a deal breaker for me and I still bought it after reading reviews but in case someone is really hoping for white, you're not going to get it.
The sleeves are very long as well and I understand that cozy feeling pulling the sleeves over your hands gives but there is a lot of extra sleeve that bunches up at the wrist. I personally don't mind this so much but it can be uncomfortable with my watch on one side sometimes.
The torso is short as well, also confirming other reviews.
Lastly, after 1 wash it did shrink considerably, so be warned. I am nervous to wash it again because this first shrink made it fit perfectly on me but a second will make it unwearable and that will break my heart. I feel like something that is supposed to hold up to running, the elements, and a little rougher wear should be able to handle getting washed with the rest of the running gear. I was surprised that it shrunk at all. Being the shorty I am it now has a perfect length torso, provided it doesn't shrink more, but the amount this shrunk will ruin this very pricey garment for others.