... FDA listed massage electrode,tens electrodes,ems electrode,self-adhesive electrode,tens pads,ems pads,electroherapy electrode,physiotherapy electrode ... units,electronic pulse massagersize:100mmχ150mmshape:butterfly1. Backing materialNon-woven Cloth, PE Foam, Tricot.2. ColorWhite, Skin.blue3. ... liner, don't worry about applying the wrong sideSoft cloth backing conform to any area of bodyPads, liners ...