Sivan Waist Twister with Resistance Tubes, Multi The waist twister will help you get rid of toxin and improve blood circulation while putting in a great workout High level waist twister device is made of high quality material, reliable, durable, and can be easily transported The waist twister will stimulate the conduction of the terminal nerve and the effect of magnetic therapy relaxes the muscles Help improve the flexibility of your hip bone while adjusting the balance of muscles around the waist, and also compacts muscles in your waist and hip. While creating a magnetic wave, the surface of the waist twister has a bulging design giving out a massage to your feet