Product review (2 stars): 2 1/2 stars...
The neck massager isn't bad.  It's basically a vibration unit placed inside that vibrates your neck, so it's okay for a little while.  The cooling, however, doesn't really work.  The plates get cold and offer a brief flash of cold against your neck, until your body heat makes them just as warm as you are.  The fan in the back that's supposed to keep you cool just isn't nearly strong enough to do any good.  It is kind of cool how they fit, but unless you just want one as a strange fashion statement, I wouldn't recommend getting one of these guys.