Features: 1.Item name: Hydrogel gel sheets, accessory for EMS ABS Trainer. 2.It is designed for all EMS AB Trainer, waist trimmer Belt, ABS Toner, body muscle trainer, ABS stimulator etc. 3.Strong adhesive ability, can be applied to whole body. 4.When should replace it: (1)Obviously feel the conduction performance decreased,cause decreased strength. (2)When it loses its adhesiveness, the adhesive surface(gel)dries out or is gouged or dirt/grime that cannot be removed exists. 5.How long can the gel sheets last?About 30 times, if you use and maintain them it the right way. 6.How to maintain them in a right way: Clean/dry your skin before using; Stick them back to the cardboard after using. How to use the gel sheet： Step 1: Take out the gel pad from the packing bag Step 2: Tear off transparent protective film Step 3: Correctly attached to the equipment, smooth out it Step 4:Confirm the correct position and stick, tear off the other side protective film. Tips: 1. When the gel sheet is not sticky enough or sticks to the foreign matter, please use your fingers to wipe the surface with water, put it in a ventilated dry place and use it after airing 2. The gel sheet should be replaced after continuously used about 30 times 3.the gel pads can not been used separately if no host device. It is replacement gel pad for ABS Muscle Stimulator Package included: 10pcs Trainer Gel Pads Note: 1.Due to the different monitor and light effect, the actual color of the item might be slightly different from the color which is showed on the pictures. 2.Please forgive 1 cm/0.39"-3 cm/1.18" measuring deviation due to manual measurement.