Installation was kind of a pain in the butt. You just have to stretch and force it. They are tough because they withstood all the manipulating and stress from the installation process.
They are comfortable and don't cause that plastic-y rubbing and noise that the stock pads did. I would say that the stock pads are airy. The vocals and sound are not focused and soundstage is wide. These pads up the resolution, bring the focus in and up the clarity.