This listing is for the One Size variant of this product. Features: This fitness geartrims your waistline without torturing your hips. Instead of energyeatingmanual spinning, this has a centrifugal ball that only requires a little forceto get the same (or even more) results. And the best thing is this can bestrapped so you won’t get bruised during workouts. It has an elastictube underneath each hoop part that can be stretched out to fit ANY waist sizeand with its centrifugal ball’s help; you can now do your daily goals without exertinga ton of energy and time. The ball providesa bit of force to the hoop when spinning — giving you that “effortless” workoutdream and it serves as a fitness buddy that helps you keep track of your fitnessprogress It has a builtin smart counter that calculates stores data(which is shown on an LCD screen) of your exercises. To build thisgear, simply lock the parts to each other along with the LCD screen. Then slidethe centrifugal ball on the outer side, and fix the support pad on the inner side. No fuss, no sweat . Specifications: Colour: Orange Material: Abs, Magnet Ring Size: 35*35.5*7cm Minimum diameter: 33cm Maximum diameter: 39cm Weight: 1.2kg Function: Fitness Device You will receive: 1 x Smart Hula Hoop 1 x LCD 1 x Magnetic Ball