[Upgraded Smart Hoola Fitness Hoop] Made of hard ABS plastic to prevent equipment aging, which is safe and durable. Under the centrifugal force of a 0.5lb soft gravity ball, the inertial slide massages every muscle in the waist 360°. Within an effective time, it helps you quickly burn fat in the waist and abdomen, achieving an ideal shaping effect.【Fitness Weighted Hoops are adjustable】- The weighted hoop with 24 sections can be easily removed and installed. It can fit most body shapes, it is a best choice for family sports. Note: The maximum applicable waist circumference is 127 cm (50 inches).【Offers fitness and massage to you】- When the hula Rings hoop rotates quickly, the soft rubber massage heads deeply massage your muscles, helping you burn fat quickly and eliminate fatigue. In particular, it is especially helpful for postpartum waist exercise, after long periods of sitting in an office, and when your physical fitness is low.[Safety materials used (PP + NBR foam)] The Hoola hoop is made of a safe and comfortable extra thick pad and waist belt. High-quality materials can prevent injuries. Maintain perfect body balance.[Silent bearing, make your movement more comfortable] The upgraded 360-degree silent roller can rotate smoothly and flexibly, so that the noise is less and the rotation is more stable. With this comfortable experience, we recommend that you exercise for 30 minutes a day for 5 days; then you can burn up to 800 calories each time!