The magnetic posture sport helps ease pain and correct poor posture. As it gently pulls back the shoulders the neck and head are straightened while aligning the spine. The Magnetic posture sport is easy to wear and gives no discomfort. It's lightweight design enables the wearer to use the sport hidden under clothing. Within the sport are 12 strategically placed magnets that target the spine and lumbar region. Magnetic Therapy has been used for centuries to help relieve stress, increase circulation, relax muscles and reduce pain The specifics ; Elastic shoulder band (all sizes): 37-38 cm ; Elastic waist band ; · ;EXTRA LARGE SIZE : 87-88 CM