The Cyclo pads are 4” in diameter. Made of high quality foam, they vary in density in order to tackle specific jobs. For example, the white pad is the least dense in order apply wax or sealant without abrading the paint. All the pads have hook & loop backing securely bonded to the foam. This allows you to change pads easily. Below are descriptions of all the varieties of Cyclo pads. Please note, you will need a pad holder in order to use the hook & loop pads.