Black Butte is a beautiful blend of superwash Merino, Yak, and Silk. We all love Merino – it is a soft, forgiving wool that is a joy to work with. Add in silk – and you get amazing sheen and drape. But the secret sauce is the Yak. Oooooh yak – be still my heart. Yak is a light, fluffy, insulating fiber that comes from the undercoat of the humble yak. The natural fiber is a light grey/brown which turns every color into an elegant version of itself. Combine all three fibers and you have a warm, breathable, wicking fabric with gorgeous drape and sheen. But when you will truly fall in love is after you block or wash the item. The yak blooms with washing and your piece will come into its own.