It can strengthen the muscles of arm, upper limbs, shoulder and waist. It can also increase and improve the muscles volume and muscles profile of latissimus dorsi and shoulder, enhance the body coordination capacity, improve the agility of coxa joint as well as the muscles around the joints and the flexibility of ligament. It has good healing function for sedentary person's strains of waist and back, old people's cervical disease and back pain as well as teenager’s crookbacked phenomenon.

Size:125*86*70cm