I am a 5'3110# woman and the men's small fit me. Bought Duofold for years, these are a great price, but the cuffs on the shirts get baggy (can't dry hot because of the wool content), and don't seem to be 'as good as they used to'-- still a great value. I'm a landscape gardener and do snow removal/shoveling in the winter and these will go to very low temps under a pair of jeans especially if you're active (shoveling) or keep you comfortable for an 8 hour day out doors below 40 in fall before you're used to the colder temps.
These are a good additional layer under my jeans and help keep the cold out down to about freezing temp's -- colder than that I would want something thicker. They fit good, not too snug, but are a little short in the length.
Recommended | Feels Too Small
A guy who likes keeping warm | from Tennessee | December 3, 2014
get a size smaller so the y don't bunch up in the crotch. Fit well w/ jeans and my uniform pants. plenty of room in the stretch waistband. Might be a little short after time but put your socks over the ankle cuffs. Great right out of the bag. Not expedition weight and don't expect them to be. Base layer low impact like they state. Ordered 3 more pair. I'm 5'10", 180 and the med was perfect. Great service and quick shipment