Two-in-one fitness massage Not only can these smart circles burn body fat quickly, but they can also help you achieve your ideal figure. You can also massage your waist to relax you. One product, two functions: side exercise, side massage. Burn fat 2-3 times faster than the normal hula hoop. Quiet bearings make your movement more comfortable Because of this pleasant experience, we recommend that you exercise for 30 minutes a day for 5 days. then you can burn up to 800 calories every time Note: If the wheels on the pulley cannot turn smoothly,Just flush the pulley and clean it. Free adjustment The correct way to remove the link is to twist the two links outwards, twist them in the opposite direction and they will pop out automatically. The assembly is also very simple, insert it along the opening next to the top pulley track, the socket will automatically suck in and get stuck. 18 knots suitable for waist circumference: 50-103cm 24 knots suitable for waist circumference: 50-127cm Easy to use Compared to the traditional hula hoop, the new smart hula hoop is easier to use. Especially with the no-drop design, you can have fun with the sport even as a beginner.