I am in Afganistan and wanted something that would keep me warm though the county's bitter cold, windy winters and this did the trick. I wear it as a base layer on very cold days and by itself on not so cold days. I was apprehensive at first because the shirt is white and the dust around here would surly turn it into a nice tan color the way it seems to do with everything else but it has held its color nicely. I am 5'6" and weigh 125 lbs and the Small fits nicely. The shirt comes down a couple of inches below my hip bone. The only complaints I have is that the sleeves come down about 2 inches short of my wrist. Also, the shirt is pretty see through. I have to wear a cami underneath. Other than that, not bad.