20ft/40ft/40HQ: 571/1156/1351pcs
Feature:
1)Functions: sit-up, nutate-up
2)Height-adjustable base for varying obligue exercise
3) Exercise and strengthen the power of your arms and waist
4) Strengthen the function of your heart and lung
5) Reduce the fat of your abdomen
6)With bungee cords and dumbbell(2pcs*1.5KG)
7) Material: steel tube,advanced leather,sponge seat cushion,padded rolls