Norton Multi-Air Soft-Touch discs are manufactured with a layer of foam rubber between abrasive paper and Velcro. The foam rubber layer absorbs any unevenness in the surface to be sanded and provides very even results with an excellent surface finish. Soft-Touch discs contain a premium abrasive made of heat treated aluminium oxide and have an exceptionally long service life. They are colour coded according to grit size, making it quick and easy to select the right disc for a specific application.