replacement gel muscle stimulators, accessories for EMS muscle stimulator. gel is used to connect the electrodes of the EMS elettrostimotore muscle to the skin, it is enough that attacks the pad gel to the electrodes, helps you to have the highest efficiency of the electrostimulator.[Long Time Durable] The gel pad for professional muscle stimulator have a long service life, it can be used about 30 times. The shelf life can be lengthen,which depends of use and the means of preservation. We recommend that before using it, clean the skin with alcohol to prolong the life of the product.[Comfort and Health] Gel pads are made of high quality materials, are very soft and particularly delicate on the skin. In addition, they have the characteristics of a good viscosity, self-adhesive and reusable.It protect the product from dry or lose sticky.[Maintenance ] Before use, make sure the skin stays clean and dry .It was recommend that you clean the skin with alcohol before using it, to extend the life of the product.Colour:blueMaterial:Gel glueSize:4 x 6cmPackage Contents:80 * Gel PadsOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.