Although these are for men, they work just as good for females. I am usually a large in the women's sizes, but the medium in men fitted perfectly. The only problem I have with these is that the sitching around the waist is coming apart after the 2nd wash, I liked them because they stay close to your skin and don't feel bulky and they do keep the cold out. Used them for a trip to NYC and Washington DC and they came in handy.
I wear this shirt under another when I need an extra layer on a cool or windy day. Works great in that respect. Softball and golf are particular activities where it's come in handy on cold days. I probably wouldn't wear it on it's own, but as a base layer it's great.
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