We mixed extra-fine Wool/ Cotton yarn to get an all-season garment and benefits from 2 natural fibers. To keep up our responsible work as a brand, we use certified wool and care- fully selected long staple U.S. Pima cotton. You can wash it in a washing machine, but keep in mind, this is a Merino garment, and have benefits of not needing to be washed so often, simply air it out when needed. The yarn is a compact yarn with extra high twist. We added “super wash”-treatment for less pilling. In addition we made it with long staple U.S. Pima Cotton. This way we can make sure of high quality, soft touch and high performance. We aim for the best only. High quality & high performance.