“I wanted a jacket for walking the pup in the PNW. I usually wear a medium (5’3” 125lb), but that was way too big. Exchanged for a small, which fits better. Could probably go down to an XS, but was afraid the hips would be too tight. I think it would be perfect if it had a less boxy shape and more tapered silhouette. I also am not a fan of where the battery sits. On me, it hits right on my hip. So I have this extra bulk, which is what we all want on our hips… Would be better if it was moved a couple inches towards the zipper. I’m thinking of making my own pocket for it to sit in so I’m not constantly hitting it with my arm. Still too bulky to layer under another jacket. But maybe if I have the XS, I could. All in all, I like the length of me (covers the backside) and keeps me comfy in 30 degree walks without overheating.”