I’m reviewing to help others with sizing. I had to buy a few and return before I found a good fit. So my review has nothing to do with durability or warmth as I’ve not yet worn them skiing.I am 35 years old, 5’6” tall and 115-120lbs (I fluctuate) and I finally ended up with a size SMALL and they fit perfectly around the waist and thighs. As other reviews stated they are a bit long, especially on me because I am long torsoed and short legged. However, the length isn’t an issue for me because there are snaps on each leg so you can snap up the cuff for if you don’t have ski boots on. The material is great and smooth and seems like they will be warm. The only reason I gave it 4 Stars instead of 5 is because the front pockets are fakes. Just for show. The only pockets these pants have are on the back and while they are zippered which is nice they are shallow. I usually like lots of storage and pockets when I’m out on the slopes, especially with my kids, but since I did buy these for more of a “fashion” look than functional I’m still really happy with them.