Desert Bloom Yarns Cozy DK: The name of this yarn depicts it perfectly - Cozy!! The blend is 65% Superwash Merino with 20% Silk and 15% Yak. Yak is a short fine fiber similar to cashmere, when added to yarns in its natural state it adds a luxurious softness and a natural warm tone. This brown tone of the Yak gives the yarn warm rich colors when dyed. This is truly an amazing yarn to both use and to wear!