White Cloth Series Electrode Pads are of high quality, premium TENS electrodes made with high-quality adhesive, reusable These TENS unit electrodes are professional quality and very popular with healthcare practitioners for use with their professional therapy equipment They are also the preferred TENS device for personal use TENS electrodes provide the highest quality reusable gels on the market Since the electrode pads are pre-gelled, simply place them on the area. After completion, place them back onto the electrode pads (included) The better you take care of your electrodes, the longer their lifespan will be