Each of the three sides has a different kind of brush on it; the rubber side to remove scratches and dirt from the leather. With the rubber/Nubuck brush you can nap the leather to restore the finish or clean a nubuk leather. With the suede brush (plastic and metal) you can nap or clean a suede leather (do not use the metal brush on stitching).   

Suitable for use on nubuck and suede leather, the Triangular Boot Cleaning Brush is the perfect accessory to help clean and maintain there LOWA boots.