No need to use experience: Smart hula hoop can rotate the watch without falling, unused hula hoop and beginners can easily use this hula hoop, it is the best choice for beginnersSafe and does not hurt the body: the hula hoop can trim the waist without hurting the hips. It comes with a seat belt and will not be thrown away from time to time. It replaces the energy consuming manual hula hoop, but has a centrifugal ball that can achieve the same or more effects with less strength.Free size adjustment: weight loss hula hoop consists of 24 sections. You can increase or decrease body parts to adjust the waist size until the hula hoop fits your body and does not fall off. You can use this hula hoop for both fat and thin.360 surround massage: each section has massage contacts, you can enjoy the massage while you rotate the hula hoop so that you can enjoy a 360 full body massage to lose weightApplicable people: this hula hoop is very suitable for beginners, people who lose weight, office workers, postpartum people, fitness personnel, etc