Cashmere. Even the name is soft.
I found a lovely jumper at a charity shop one day. Took it home. And felted it in the washing machine. Boy did it shrink! It was teeny tiny by the time I'd finished with it!
As the sleeves were so short I decided that the only reasonable thing to do with it was to make some mittens. I could just see them in there. And it meant that I didn't have to make the cuff as it was already made for me.
This is the end result.
And I even had enough cashmere left over in order to make a phone cover.