These are comfortable and fit as expected. I'm 5'6 and 130 pounds and got the small. They're a tad tight, but I wanted them that way since I'll be wearing them as a base layer. My only reason from keeping this from being a 5-Star rating is that they aren't as warm as I thought they would be. I purchased another pair of fleece lined base layer that was much thicker and warmer. They will still be a great addition to my winter attire.