100% yak down.
From the Shokay website:
Shokay yarn is made of luxurious pure yak down fiber, hand-combed from the yaks in the exotic Himalayan regions. The down is spun into a Worsted-weight yarn, bringing you the same warmth that protects the yaks at sub-zero temperatures. This unique hand-knitting yarn is amazingly soft to the touch and comes in a variety of beautiful colors. Shokay yarn is perfect for one-of-kind projects and gifts and is also machine washable.
For inspirations on what other people have knitted with our yarns:
SHOKAY Facebook: https://www.facebook.com/shokaysocial
SHOKAY Knitting Group: https://www.facebook.com/groups/182233641946619/