Fit: I'm 5'2" and 110lbs. Based on Columbia's size chart, my measurements on top are XS while on the bottom I'm S. I bought the S jacket and it fits well. I can wear at least 3 t-shirt layers underneath the liner or a fitted sweater; a non-fitted sweater may be too tight. The bottom hits slightly above the hips and is a bit more snug than I'd like and the arms are longer than normal; they are longer than S Columbia tops that have thumb holes.

Material: The fleece liner is not a soft fleece; it's slightly rough with a small one directional pile. The sleeves are lined inside with another layer of soft thinner fleece; this creates very warm arms! This thinner fleece is also the lining of the pockets in both the liner and the shell which makes very comfortable pockets. Zippers are mid quality, not cheap zippers but not heavy duty ones either. The shell is made of two layers and the inner layer is slick and soft on the skin.

Style: There are buttons to keep the sleeves of the liner in place and velcro to keep the neck area in place. Velcro is also present at the wrist and to cover the main zippers. There's just two zipped pockets for the shell and two zipped pockets for the liner, which are inaccessible if both pieces are zipped together. The bottom of the shell can be tightened as well as the hood by elastic.

Warmth: With a long sleeve base layer and long sleeve tee, I survived wind chill in the teens.