Slendertone system is the future of body toning & wellness, giving you the full body shapes you desire-guaranteed. This revolutionary new concept allows a single h&-held controller to be attached to a range of garments, which tone different areas of your body. Discreet & rechargeable, SLENDERTONE SYSTEM delivers result-fast. Scientifically proven to improve your shape. Slendertone system-abs uses the only clinically proven Ems technology, exercising all of the muscles of the abdomen not just those under the belt. A signal is sent to the nerves which are connected to all of your abdominal muscles. The result: independent clinical trials have shown Slendertone patented C.S.I. technology delivers a firmer, stomach in 4 weeks. Rechargeable- cost effective & convenient. Belt fits waist sizes 27-47"/69-119cm.