The electrodes are carbon based and backed with strong, self-adhesive gel which when used correctly following care instructions can last up to 30 uses. The gel is of very high quality therefore distributes current across the electrodes efficiently and evenly unlike cheaper made pads.Fits the following models: COMPEX SP2.0, COMPEX SP4.0, COMPEX SP6.0, COMPEX SP8.0, COMPEX FIT1.0, COMPEX FIT3.0, COMPEX FIT 5.0, COMPEX WIRELESS, COMPEX MI-SPORT, COMPEX MI-FITNESS, COMPEX RUNNER, COMPEX VITALITY, COMPEX ENERGY MI-READY, COMPEX PERFORMANCE MI-READY, COMPEX FIT, COMPEX FULL FITNESS, COMPEX SPORT ELITE, COMPEX MI-SPORT 500, COMPEX MI-FITNESS TRAINER.
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