Replacement Gel Pads are great accessories for all Abdominal Gel Padt, AB Trainer, Waist Trimmer Belt, ABS Toner Body ,ABS Stimulator. They could help conduct to nerves and muscles to ultimate abs stimulator works well. Made of high quality Hydrogel. Easy to use, just sitck to the placement of abs belt. pad could 20-30 if carefully. How to maintain gel pads? Clean skin using the gel pads, sweat and dirty would affect the adhesion and service life. rinse or apply some water to clean the gel pads, and let it air dry, then attach it to the plasticboard for usage, which could the cohesive and service life. Keep in shade and cool place from the Contact of children. color: blue Material: Hydrogel Package Contents: 100 * Abs Trainer Replacement Gel Sheet Only 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.