I live in PR where the average temperature is 80 degrees and i was tired of going to the States for winter vacation freezing to death. I looked at the girls that looked comfortable in their jackets and read North Face. I knew this was the jacket to buy. I entered the internet and surfed but was doubtful regarding the warmth provided as well as the sizing, as we just use one layer all year long, light. The comments provided reassurance and the information I needed. Warm even in Chicago's windy weather and true to size. I went ahead and bought the size 12 and guess what! I tolerated the 12 degrees and windy Chicago weather with just a sweater and muffler underneath and it didn't flatten me in the chest area 39 1/2". I am not disappointed at all and am planning to get a short one for 30 to 50 degrees. Thank you for such a nice store.