No gel sheets needed! Introducing "Eledyne," an innovative fabric electrode that brings together SIXPAD's technology. By using specially processed fibers for the electrodes, it can be used for extended periods with just a small amount of water!! ✨Machine washable✨ Easy to care for at home, so you can always use it in a clean condition. I'm selling this because I bought a different size. Some parts are slightly fuzzy from repeated use. Please check the photos. Therefore, I'm offering it at a bargain price. There are no problems with its operation or effectiveness. How about giving it a try? Also, since the size may not fit, I'll include a complimentary adjustment belt. Please use it. Includes charging cord, spray bottle, and adjustment belt.