The exercise hoop includes 26 detachable links which will suit all size between 30 inches (14 links) and 56 inches (26 links), you can assembly the number of links fit your size Our exercise hoop is made of eco-friendly ABS materials, the material is tough and sturdy which will not be damaged easily We have improved on the problems of noisy stuck and fall apart with previous exercise hoops and make this product It is suggested to exercise for 30-45 minutes per day and this will burn about 600 Calories If there are any problems with your exercise hoop, we provide two years after-sales service since your purchase day.