Gel pads remove easily from a plastic backing & attach to the unit without any sticky residue or glues. Following treatments, pads can be returned to the plastic backing for reuse in up to three to five additional applications, depending on skin type & preparation. Each pack comes with five pair of Wi Touch Gel Pads for multiple pain relief applications. The gel pads: Create a strong adhesion to skin Are reusable pads that can be used for multiple applications Are easily removable from skin, without leaving sticky residue behind Are great value when compared to cost of traditional electrodes & leadwires