About Product:The Main functions provides: Sculmuscle, the inner muscles, This stool adjustable training is training harmful Superior equipment, sit-ups can easily train each part of the abdominal muscles and the inner muscles, The main bracket can adjust good low position, suitable for men and women, old and young, foldable storage, convenient collection, trod to use dumbbell, Muscles at the same time to exercise upper limb and chest and back muscles.