Fitness and health are combined in one, 3D massage sole increases physical vitality, and the upgraded pull rope style; The anti-skid screw thread chassis will not hurt the floor. There is no need to worry about slipping during movement to protect the floor from being scratched; Polypropylene resin (PP), non-toxic, tasteless, tasteless, safe and durable; Large diameter design, suitable for most people; Spiral fat burning method, ten minutes a day, adhere to thin waist, thin legs and thin hips, get rid of fat, shape a perfect curve, and exercise at home