Both my husband and myself suffer from back pain. We are slouchers, and sitting up straight isnt even a thought for us. I got this on a whim to see if it would help. So far, it does do what its supposed to do, and fits us both easily. Highly adjustable, thick sturdy material. It feels weird to wear at first, but nothing unbearable. Following the recommendations of the instructions given, wear it for 20 minutes each day and gradually increase. Its still early to tell if it will do any lasting effects, but we are trying to make it a routine habit to wear each day. Will know more over a longer period of time. Either way, its not a bad or harmful thing to give a try!