Runs a bit small
I'm generally a women's six so I followed the sizing chart and purchased a men's 4. It fits a little small. I'd buy a size up if you live in cooler climates/ wear thick socks. These are going to be great most of the year for me, just not when it gets cold.
Rated -1 on a scale of minus 2 to 2, where minus 2 is Runs Small, 0 is True to Size and 2 is Runs Big