These pants are wonderfully soft and comfortable. I did have some questions about what size to order since I haven't ordered any pants from Woolly before-- with the size guide more typical for men's pants and since it said to size down for women. I ended up ordering a small, medium, large and x-large to try. (The picture shows all 4 pairs on top of each other to see size difference)
The actual garment waist size for the pants I received:
S- 30 inch
M- 33 inch
L- 34 inch
XL- 35 inch
While I probably would order a Large in Women's pants (42 inch hip/ around a size 12) I ended up keeping the small for wearing under things and the medium for wearing alone. My mother (43.5 inch hip) liked the medium for wearing under things and the large for wearing alone. If I had not ordered all the sizes I still probably would have liked and kept whatever had come since they all fit reasonably well. The leg room and length did also increase with each size.