The cleaning method for a SurfacePad depends on what's staining it, but we generally advise only using a damp cloth. If dirt and oils from your hands, dyes from the fabric of your pants pocket, ink from a pen, et cetera as been absorbed into the leather, however, you may not be able to restore the original appearance. We recommend consulting an expert in leather care, such as someone in a leather goods store or shoe repair shop, if more than a damp cloth is required to get your SurfacePad clean.
