This is J. Crew's permanent collection line, meaning that while the classic colors (black, navy) are available all the time, every year there are new colors released in trendy colors.
Wool will keep you warm in winter and in colder climates. The wool is thick and has a substantial weight. Can wear fleece lined tights underneath for additional warmth!
The waist tends to run large, especially for women with curvier hips, and may require tailoring. Buy the size that fits your largest measurement (hips or waist) and tailor down to fit perfectly.