I normally don't like to run in full zip items because I find them to be bulky, but this jacket is very nice. I usually use it with a long sleeve underneath in weather between 30-40 degrees. I mainly run in the morning before the sun rises and the added reflectivity is why I purchased this jacket. I was pleasantly surprised by how light (weight) it is. The back is really long and definitely covers your butt. The sleeves are long enough to make the thumb holes functional. I'm 5'5" about 110 and I got the small. I never tried on an xs, but I am sure that would have fit a little better.
Reasonably priced arrived within a couple of days of my order. It was a Christmas present for my daughter who wore it on her first run on her return home. She was greatly impressed with how comfortable it was.
I absolutely love this running top, it is light and comfortable and water and wind resistant, I had to buy a medium as small was out of stock and I didn't want to wait ! So it's a little lose but only because I really needed the small. I highly recommend this top for runners. Excellent purchase - thank you.
Lightweight yet effective in rain and wind; definitely tested on weatherproofing today in Scotland! Stylish design and I'm happy I chose to go up a size from my usual when ordering online after reading it described as slim fitting.