It supporting design helps correct bad body posture of back and shoulder. It pulls shoulder & back to correct posture. It provides gentle back support. Prevention of adolescent customary humpback.10 High energetic magnets contact the spine & lumber region* Non restricting uni-sex design for men and women. Fully adjustable, comfortable & easy to wear. Made of a soft, stretchy blend of Neoprene, it is lined with cotton for comfort and fits discretely under clothing. hand washes.