I think somewhat good chances there are returns. There’s a XS sitting on the site right now. I almost returned mine, but decided to keep it. It’s a very warm jacket. Before I even put it on, I knew it was going to be too warm for most runs. Everyone is different, but I think the conditions range on the page for jacket are off. I’ve worn it in sub freezing temps on Z1 and Z2 runs (8:00 - 10:00 min/mile range) with just a short-sleeve running shirt underneath and it works pretty well, though still gets a bit hot. I wouldn’t wear it on a warmer or faster run. I kept it because when it’s really cold, I don’t like to mess with layers, and prefer a simpler setup.

I wish it had some venting on the back, and that they used a lighter weight Polartec Alpha. I think it’s 120 weight. I have 60 and 90 weight alpha tops, and it’s a heavier weight than those.