The White Cloth series of electrode pads are high quality, premium Electrodes made with high quality adhesive for reusability. These Electrodes are professional quality and very popular with Healthcare practitioners for in-house use with their electro-therapy devices. They also make a preferred choice for personal use Pain reliever. These Electrodes offers the highest quality of reusable gel on the market. Since the Electrode Pads are pre-gelled, simply place them on the area, and when finished, place them back on the electrode pad (included). The better you care for the electrodes, the longer they will last.