Created by Blitz for the care of the finest, most delicate surfaces. For all wooden violins, violas, and cellos. One of the few cleaning cloths that contain both natural carnauba and natural beeswax, with just enough silicone added to assure even distribution of these natural, renewable waxes. The color of the wax embedded cloth changes every once in a while: currently it is yellow. The gray cloth is for buffing.