Amazon
For upper and lower body exercising Five resistance levels, x light: 04mm, light: 06mm, medium: 08mm, strong: 10mm, x strong: 12mm Improves effectiveness of workouts
For upper and lower body exercising Five resistance levels, x light: 04mm, light: 06mm, medium: 08mm, strong: 10mm, x strong: 12mm Improves effectiveness of workouts