First of all this was gave to me by a friend and it was just the top. It was medium so it's great if your a smaller person and I'm taller so I need a large. but I was outside and it was maybe 55 to 60 degrees out and i just had a short sleeve polo on. Well I went to the car and threw this top on and warmed up within 30 seconds. After 4 minutes I was sweating and it was at night in the beginning of October in Virginia.this top was very very comfortable and warm, making it great under you coat during winter survival. I really love this but I give it a very good because it was a tad bit too small. All in all, worth twice what it is.