Product Details:Slendertone Flex Pro 7P Abdominal Muscle Toner is a clinically demonstrated, easy-to-use, abdominal toner that strengthens and tones your abdominal muscles. Using Electrical Muscle Stimulation (EMS) technology, the Flex Pro 7P toning belt flexes the main core muscles: rectus abdominus (upper and lower); obliques (sides) and transverses abdominus (deep girdle muscle) for a healthier, more toned midsection. Use for 30 minutes a day, 5 times a week and youâll see noticeable results in just 6-8 weeks.For the best results, we recommend that you use your Slendertone belt in conjunction with a normal, healthy diet and exercise. Independent clinical trials have shown that 100% of users report firmer and more toned abs.Uses clinically demonstrated EMS technology7 progressive ab toning programs to continually challenge and flex your core musclesStrength training intensity levels 0-99Built-in battery operated controller makes it easy & convenient to useBelt fits waist sizes 24 - 47 (belt fits up to 56â with included extender)What's in the box:Slendertone 7P Abdominal Muscle Toner with built-in controller1 set of pads3 x AAA batteriesInstruction manualQuick start guideTravel pouchThe Science:Slendertone 7P Abdominal Muscle Toner -The muscle at the front of your abdomen comprises of the internal and external obliques, transversus and rectus abdominus. Core stability training emphasizes the importance of activating both sets of obliques and the travsversus abdominus which, in combination with the gluteal and lower back muscles, can act as an effective support or 'brace' to the lumbar spine when a movement is being performed.Current thinking amongst researchers is that regular training of these muscles can play an important role in the prevention of incidence and reoccurrence of low back pain. Moreover, core stability training can enhance the performance of people of all ages and abilities to carry out both everyday tasks and more athletic endeavors. The role of Neuromuscular electrical stimulation (NMES) in producing safe and effective contractions of the muscles of the anterior abdomen has been well established in clinical research and can make an important contribution to an effective core strengthening program.