about this project 2-in-1 Fitness MassageUpgraded Adjustable Fitness Ring: Our fitness ring has been upgraded in terms of material and structure. It is made of strong and durable high-quality ABS material. The diameter of the hula hoop can be adjusted according to the individual body shape, and the length of the rope can be adjusted according to the exercise intensity, which is convenient and easy to use. Adjustable Exercise IntensityThe smart hula hoop is made of hard ABS plastic, which prevents the equipment from aging. Different from ordinary smart hula hoops, users can change the number of weight-bearing blocks in the weight ball according to their own load-bearing capacity, thereby changing their exercise intensity (1 to 4 weight-bearing blocks can be placed, each about 60g). At the same time, the exercise intensity can be changed by adjusting the length of the rope. Detachable DesignConsists of 24 detachable parts with a diameter of 120cm/47.24 inches, which can be disassembled by pressing a button. You can choose your own hula hoop according to your waistline. The weighted hula hoop for exercise can be adjusted to 16 (fits 80 cm / 31.49 inches) to 24 (120 cm / 47.24 inches) parts according to the waist to fit all sizes and shapes. The sections come apart easily for easy storage. The set includes 24 detachable parts. Silent BearingUpgraded 360-degree silent rollers rotate evenly and flexibly, with less noise and smoother rotation. With this comforting experience in mind, we recommend exercising for 30 minutes a day for 5 days; then you can burn up to 800 calories each time! Applicable people and precautionsSuitable for almost all adults and children, but not suitable for the elderly and babies. Make sure the hula hoop is fastened and wear close-fitting clothes before exercising; pay attention to the swing of the heavy ball during exercise and avoid touching other people or furniture. At the same time, don't be too heavy when you use it for the first time.