[What's it for?] Hydrogel gel sheets, accessory for all Abdominal Belt, AB Trainer, Waist Trimmer Belt, ABS Toner Body , ABS Stimulator.[How long can the gel sheets last?]The gel pad need to be replaced regularly, every pad could 20-30 .[How to maintain them in a ?]Clean/dry your skin before using; Stick them back to the cardboard after using this Gel Sheets PadGel sheets are consumables,replace with a new sheet at the following :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.How to use:The side attached to the white paper should be attached to the gel pad.The side attached to transparent film should be attached to the skin.colour: blueMaterial: hydrogelsize: 4 * 6cmPackage Contents: 48*Abs Trainer Replacement Gel SheetOnly 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.<br>Note: <br>1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. <br>2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you!<br>About Shipping: <br>1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly.<br>2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances.<br>3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 79 hours, wish you a happy shopping!