Massage Fitness Waist Twist Board The balance rotating disc is made of ABS pressure-resistant plastic, steel ball, and magnet. The two soft cushioned foam handles for comfort. The Diameter: 26.5cm, thickness: 4.5cm. It can bear the weight of 90KG. It is not recommended to use the Twist Disc on laminate floorsUpgrade Design On the footpads have evenly distributed many plastic particles, and have 6 magnets that can activate the points on the sole fo the feet, makes you get foot massage when you take waist exercise. The chassis made of non-slip rubber pads, which can be tightly adhered to the ground floor during physical exercise. 3D Height design, that designed according to the shape of the human foot so that the entire foot can be completely attached to the massage cushion.Latex-assisted Elastic RopeStretchy cords with handles; spin from side to side; with a latex pull rope be better for arm exercise. Balance the body and exercise the whole body.Effect of Use You can achieve follow effects by persistent use: Shaping your waist and abdomen, upping your hips, and shaping your perfect leg curve. At the same time, the viscera are massaged, which can promote digestion, enhance metabolism, reduce weight, and improve body immunity.Thoughtful Gift Prevent lumbar disc disease, Help correct the spine, Promote intestinal peristalsis, help get rid of toxins are good gifts for parents, friends, and children, which can be both entertaining and exercise.