These conductive electrode pads are premium self-adhesive and reusable electrode pads that are made with high quality adhesive for reusability. They are pre-gels and very flexible do not require additional creams or gels. The durable integral structure allows patients easily removing by pulling up from the leaf tail without damaging the structure; up to 30 times reusability by using in the right way Characteristic: 1. Self-adhesive, reusable, durable,Premium-Quality 2. Conductive gel 3. Surface PU leather 4. Strong adhesion with skin, no allergy, stimulation, residue and reliable physical and chemical properties 5. Snap connection with a Size 3.5mm diameter in the Market 6. More repeated use without diminished effectiveness 7.Premium-Quality Electrode Pads for MASTOGO Wireless tens unit,Include 4 pcs 8.Our high-quality replacement electrode pads have a thick, reusable hydrogel layer with medical grade non-woven material backing Tips: 1. Wash skin thoroughly and then dry it before applying electrodes 2. Apply the whole surface of the electrodes firmly to the skin 3. Do not use the same electrodes on different people 4. Do not apply to broken skin 5. When electrodes begin losing adhesion, gently rubbing one or two drops of water onto gel surface may extend usage. If not, replace with new electrodes 6. Store in the bag in a cool, dry place between uses