describe1 This is a weight loss and belly reducer, which is good for health, simple and convenient to operate. The product design massage fitness waist twist disc is like an immovable skateboard and a ringless hula hoop. It occupies a small area, is easy to use, and simple to practice. Maximum Weight: 85KG (180 lbs) Twist your abdomen, hips and thighs to promote blood circulation; massage your feet. 3 Effectively burn calories and combine the benefits of cardio with reflexology. The magnetic disc will massage and stimulate the meridian points on the soles of the feet, helping to promote good health. 4 Precision ball bearing rides for smooth motion, high impact, and a rotating platform for cardio. 5 Stimulates blood circulation -- combines the principles of reflexology,Package List One PieceSize; 25*3cmCategory: Hand ExercisersColor: Green