This device is amazing - it took me probably 5 minutes to get it all adjusted. You need to bend the arms to fit the contours of your shoulders and be sure it contacts the back of your body. Then adjust the front support bar that contacts your diaphragm area, lastly the length of the cord with the attachment hook. After that it is just a matter of slipping the device over your shoulders, click the arms into place (I think some users do not realize the arms must click into a soft locked position - this keeps the unit stable. If you do not click the arms into place the harness can definitely sway on you) and you have an exceptionally stable and comfortable sax support. After wearing this around for a while I literally forgot I even had it on. Plus it is so low profile it looks much more like a strap on your neck than a harness. I could not possibly be happier and for myself will never use anything else.