BABAKA U9 Key Functions: We have researched the science & technology of body widely, and adopted the biologic mechanics & anatomy's achievements. According to the growth's peculiarity, it formed many force-applying sides by the draw of band's net, thereby effectively correct the posture of sit, stand, and walk; remedy the lordosis. crookback; and prevent short sight as well Specifications: 1.Size: Size S Stature120-140cm Waistline53-65cm Size M Stature130-160cm Waistline62-74cm Size L Stature152-172cm Waistline72-85cm Size XL Stature165-180cm Waistline84-96cm Size XXL Stature176-190cm Waistline95-108cm 2.Color: Black/Green 3.Material: Ultrathin cloth with high flexibility