Speaking as a female who prefers mens hoodies, 54, 134 lbs, 36 up top,  usually wear a womens Medium. I bought this to wear when its cold in the house or cool outside, like a sweater but Id rather toss on a hoodie. I got a red size Small, and it fits perfectly though not a lot of extra roominess. I ordered another in my other favorite color, maroon, in a Medium for a more oversized fit when I want to layer it over something heavier,. I think the two of them will cover my needs perfectly.