This jacket is not meant to keep you warm in freezing temperature. It is good for running a few miles or wearing it over a sweater on a rainy day. I got an Extra Small Maroon and it's 35 inches around the chest area and 32 on the waist area. It can be rolled up to a ball and doesn't take a lot of space if you take it on a trip. It is durable and VERY light weight. It is water resistant and the hood covers your head, if you zip it all the way up it covers your mouth and just leaves your eyes and your nose exposed. Recommended for those who are always out hiking in the morning or joggers in cold weather. If you wear this on a 40 degree weather you will feel the temperature for sure. The color is nice and design is simple. The fabric is thin, almost like an umbrella and durable.