most things made out of suit pants are lined with a thin satiny type material, Im unsure of the name of it, but its the thinner lesser quality looking stuff.
Sometimes its just lined to the knee, and sometimes to the bottom hem of the pants, To stop it from moving around you would sew it into the hem.
Im not sure about any treatments to make it less itchy, the only thing i could suggest is washing it in fabric softener...... but that may not do anything.
























