Made entirely of 19.5 micron, ultra-fine Merino wool. A special coating was added to prevent pilling. A cut that looks slim without hugging the body too closely. The line at the neck was made thinner so it's less conspicuous, making it great for any kind of outfit. The neckline is knitted in a tubular shape to resist fraying when machine washed. 100% Wool Machine wash cold, gentle cycle