Well, these replacement pads are BETTER than what came with the mouse. 5 or 11 depending on the brand. These dont fit the bill. Son demasiado cómodas. My husband said the slippers were quite comfortable because of the memory foam. I put the adhesion strip on with the picture holder first on the wall by itself and allowed it to sit for the recommended hour I then added the velco pieces to the frame and stuck those alone with the frame all together. I use a microfiber cloth to polish and clean the surface periodically although that is seldom needed. So much so that I have to turn it down - which is saying something because I listen to my music on full blast most of the time. It comes in two parts. For this price, the earphones are a steal!