I just returned from a felting class with my favorite local teacher, Gabi Tisch. (Well, not exactly local, but she is living and teaching a mere 20 km from where I live.) This is the starting material - dyed silk. There is also some painted linen which will be a scarf to accompany the jacket that is to be stitched from the felted material.
The dyed silk was first layered with wool and afterwards with multicolor roving containing a little bit of silk, too. Wetting, pressing with bubble foil and then felting rendered a beautiful and extremely lightweight felt that will give a very interesting jacket I think.