So far so good...
Product comes very well packaged and instructions are easy to follow. There's a little ball in the rubber tube that is used to let air flow or block. It's not easy to move into place. I'm worried I may puncture the tube at some point. Blows up, but you do have to pump it quite a few times to get it fully blown. So far, after 1 day it seems to help, but will report back after longer use. Fingers crossed it helps relieve the pain in my neck from the herniated discs.
Rating: 5 stars