Felt insoles

As I was getting out the bags of wool tops and wondering if I could remember how to make felt - it's been a while! - I came across the bag with felt and pre-felt made in years past. What a lot of it there was -

 All I needed was enough to make some insoles, and with a little further felting this piece became thick enough, and was still large enough -

The larger scraps were used as an extra layer at the heel.

He'll probably like to use them plain side up -