The phrase "fine wool" refers to high-quality, soft, and delicate wool material taken from specific types of sheep that have finer and thinner fibers. Full definition
It doesn't have to be cashmere, you can go for a beautiful fine wool if you prefer, I just recommend a good quality natural fibre. (michelle-tyler.com)
Made of his signature, fine wool jersey, this little black dress is delicious! (1stdibs.com)
Tailored in fine wool, it features pic - stitched details and a slim, flattering fit. (menswearhouse.com)