It is 100% fine wool single. It feels similar to Lambs Pride worsted, just without the mohair. Though when it is felted it becomes incredibly soft and squishy! It has 240 yards of wooly yarn and would be suitable for a needle size of 7-9 US.
I chose this particular yarn because I wanted a staple yarn that would be ideal for a lot of different worsted weight projects. I knit my sample on size 11s and then washed it with one cycle through my washing machine. Its before measurements were 5 3/4" x 5" and its post-felting measurements are 5 3/4" x 3".
It would be ideal for hats, mittens, scarves, felted bags, felted bowls, or any other project that calls for worsted weight yarn.