Portable. Needs to charge frequently
It doesn’t bend right for my neck but have used on my upper back. It’s easy to use and lightweight.  Feels like kinda like a heating pad.  You have to download an app to use for controls. Would be super easy for someone to pack that travels a lot.  I have used it a little more and do think it helps a little. It’s very lightweight and convenient.  It does have to charge it often.
Rating: 4 stars