Not sure yet.
Just received this. Used it once and I’m undecided whether to keep it or not. Since this is not flexible it does not sit on your neck. The balls massage the base of your skull and the top of your shoulders. Doesn’t reach the in between which is your neck. I have degenerative disc disease in my spine with emphasis on my neck and massaging my neck is very important to keep the headaches at a reasonable level. This doesn’t have any straps to keep it in place and it’s awkward. Its difficult to keep in place. I will try this for a few more days to give it a fair shot. I will update.
Rating: 3 stars