I bought and returned a showers pass elite jacket. I *loved* the quality, but I found the cut too short for me. The small fit in width, but then the sleeves and length were too short. It didn't even reach my hips to comment on how it fits there. But, a Medium would have been too wide, since it was still a bit loose on me around the middle. Also, it is designed to be quite short in front, but long in the back, to fit better in the cycling position. But I didn't like how it looked off the bike, just too short and boxy for me, especially if you also want to use it for other outdoor activities. Too bad cuz the workmanship was excellent. Maybe it would fit you better since you describe yourself as more short waisted.