Better than expected
I have used it for a couple of days and it works better than I had expected. It helps the positions of the neck and the head to be held firmly and the neck to be extended (not compressed nor bent too much) , which I think the purpose of this device is. I have to use a little longer to check if it assists me to have the right posture in terms of the head and the neck (not to have the head too forward), though I believe this device can work as a reminder for the right posture.
Rating: 5 stars