This is a new product that doesn't require gel sheets, just wet it to use. The S-M size is for women and slender men. I tested it once, but I've been too busy to use it. Everything in the photos is included as accessories (from image 5 onwards). Warranty included. I've lost the paper inner box, laundry net, and the original two-pronged charging cable, but I'm including an Anker Type-C charging cord and plug as replacements. Sixpad, muscle training, EMS, diet, training, slimming, leg care, thigh care