ITEM NAME:10x Silicone Gel Tens Units Electrode Replacement Pads For Massagers PracticalMO.Cleanse your skin before using electrode pads for better results. Non-woven Fabric electrode Pads. Material: Silicone + Gel. Bio-compatible, Dry out Resisting. Specially designed holes, on each pad, to release the generated heat and give more comfort and less irritation.