Fits good. Easy to use. I really needed something to layer the center of my stomach and chest since I wear a leather vest that will block then wind in certain areas of my front except the middle. This is small and comes with a very handy bag to compress it down to a nice size. It falls just a little short in stopping all the wind chill from getting through however and thats what the 4stars instead of 5 is about. Perhaps if the material was a little thicker and stopped all the wind or perhaps two weights should be sold. It’s still a big improvement over me wearing a jacket liner backwards as I did before.