Twister is made up of a heavy- duty steel square frame of 2inches. It can be used for fatigue removal, body toning, body shaping and body strengthening. Product allows full body conditioning as the twister allows you to target your thighs, waist, hips & many more muscle groups. Suitable for strengthening core muscles. Sweat proof gandle grips. Rubber foot caps protect metal frame work from damaging the flooring &provides stability to the product, keeping it in position.