I wear this skirt walking to work, hiking, and even jogging a little in temps of 0-20F. I'm 5'6", 120#, with narrow hips, and the small fits well over fleece tights or jeans. I also pack the skirt along to put on when I stop. The full-length zippers make it an easy on-off warm-up layer. I also have a Skhoop skirt, and the Sherpa skirt is a little sleeker and warmer, but otherwise comparable.
This review was written in the old system and had content requirements that are different than reviews written today.