The padding for the crotch was made from a hard but light material used to insulate fireplaces. This material is very easy to cut and sand down, allowing you to create you desired shape to pad out a model. I created the crotch in two parts and then stuck them together with my armature in between using Uhu.
Final padded crotch below.
The padding for the chest was made from the same material as the crotch and also in two parts which where then sealed together around my armature using Uhu.
My armature laying in the back sections of my padding.
The legs where padded out using a foam I had laying around at home. The foam was most likely from a box that a present came in, it was already in straight segments it was just a case of making the foam more of a cylinder shape as appose to a rectangular prism. Most foams found in packaging always come in handy some keep hold of them!