Many years ago I purchased a Ekornes leather recliner. The care directions specified the use of cotton towels and not "microfibre" cloths. Granted, coated automotive leather seating is a distant cousin to the leather of this piece of furniture, but I still rely on 100% cotton toweling for cleaning leather and haven't had an issue. Particularly if you are looking for some "bite" I would opt for cotton over a "scrubber" material.