It is 99% wool. I crochet the piece first then felt it and then embellish them with bead/baubles and non-felting yarns. I many times work novelties yarns in with the wool so when it gets felted it bubbles to the top (because it does not felt its self).
You can see my process and other designs at
It is actually my favorite part of making them too. The thought process of seeing in my minds eye as I crochet them how they will look once they are felted. So many variables because of the Wool and the addition of non-felting novelty yarns makes it somewhat unpredictable.