This item breathes and it's warm. We don't know how Patagonia develops such items but with its chest zipper pocket -- perfect for passports! – we are 100% certain it is a wonderful travel sweater/shirt since it compresses into a small ball and un-rolls without wrinkles. A great second layer. Made by Patagonia
: With a "slim fit" you want to be sure to review the sizing chart for measurements and then know that it will be more fitted to your frame than a "regular" or "relaxed" fit shirt. If you want a looser fit, we would recommend going up a size or trying our men's Zip-Neck Pullover
. Looking at the men's sizing chart it will give you women's size conversion.