I needed a new lightweight athletic jacket for hiking and general gadaboutery, and this shell fits the bill perfectly. I'm 5'3", 155 lbs, 36 DD, and the large fits me perfectly. There are a number of small surprises that make this jacket one of the nicest athletic jackets I've ever owned, starting with the pull-down cuffs with a thumb hole. You know how you tuck your fingers up inside your jacket cuffs on a chilly morning walk? Well, this jacket was actually designed for that, only better! It's such a clever little detail that I'm amazed no jacket I've owned before has had it. Tucked away inside the pockets are drawstring ends, which allow you to pull the jacket snug around the bottom, useful if you're walking somewhere that has unpleasant swirling drafts, such as you may encounter at the Oregon Coast. Another pleasant surprise is how well-fitted it is, which gives it a flattering look that makes it appropriate outerwear for an office or other business-casual setting. It's a very grown-up looking shell jacket, for athleticwear.