the weighted hula hoop is 52 inches, which consists of 24 detachable and combinable sections convenient for size plus. Different from ordinary hula hoop, the new hula hoop can adjust the waistline. Easy to use, once you get the hang of it, even the beginners, women, kids will not be disappointed with this adjustable fitness equipment around their waist.It's gonna be enjoyable and fun. The weighted hula hoop is made of high-quality ABS and silicone. The high-quality materials can prevent from aging and provide longer-lasting use. It is also consists of a counter tracker, a gravity ball. This is hands down the simplest, safest and most reliable fitness equipment ever created .It is proven that a 30 min exercise can consume up to 800 calories. Please wear a tight top when using a weighted hula hoop.