SIXPAD training gear 4-pack, perfect items for exercise. These are the high-conduction electrode pads (gel sheets) for SIXPAD. They utilize EMS technology that trains muscles through electrical stimulation. The gel sheets are designed to be less likely to penetrate the stratum corneum, causing less irritation to the skin. SIXPAD High Conduction Electrode Pad (Foot Fit Plus) x 4 set Please consider purchasing.