Optimum Microfiber Polishing Pad, 6.25" The Optimum Microfiber Polishing Pad offers maximum conformability to the shape of the vehicle. The thick microfiber spreads polishing abrasives evenly over the curves and contours of the vehicle. The variable surface of a microfiber pad - compared to a flat pad - enables more polishing action with every pass of the polisher. To get an idea of how this works, if you rub your hand over a flat foam pad, the surface doesn't change. If you rub your hand over a microfiber pad, the microfibers move