Product: Fitness Waist Twisting Disc_x000D_Material: Plastic_x000D_Gross Weight: Approx. 540g / 19.05oz_x000D_Diameter: Approx. 29cm / 11.42in_x000D_Height: Approx. 3cm / 1.18in (manual measurement allowable error) 1Preferred Material: The waist twisting disc is made of high quality materials, durable. With a small round hole on the side, you can use it with your fitness pull . 2Good Carrying Capacity: The measured bearing capacity of the carefully selected engineering grade material base is about 400KG, with excellent bearing capacity and impact resistance, and stronger stability. 3Fitness Shaping: Persistent exercise can not only slim waist, legs, buttocks, but also exercise hand muscles, get rid of cellulite, and shape perfect curves, which is convenient and fast. 4Stable Motion: The equipmentball can achieve 360 degree omnidirectional movement and do not freeze, and the high impact rotating platform provides a powerful form of aerobic exercise. 5Convenient: The lightweight makes it easy to carry. You can exercise anytime, anywhere, without time and space constraints. Both indoor and outdoor for fitness waist exercise.