I purchased this jacket for my wife and was very unsure about the size as I know she is very specific on how things fit. Once i ordered it and told her about it she had ordered a similar jacket from a different vendor a week earlier. The other jacket came in and was very basic but worked. Once the Mountain Hardware jacket came in and she tried it on she loved the snug, not tight, form fit. She could still put on a sweater under the jacket. She loved the hood and the half glove inserts as well as the front breast pocket, all of whick the other jacket did not have. The true test was when she was outside at my daughters school and it started getting very windy with light snow. She said she zipped up and put the hood on and was warm enough. She loves the jacket.