Not plump, or supportive at all. An airline neck pillow would be a far better choice, IMO. Very narrow and far too soft. I chose this SCAM hoping to save the $20/25 extra dollars the "real" name brand alternative costs. But, after a few nights use, I'll be delighted to spend the extra money to see if the "name brand" delivers on what it promises.
Prior to purchasing, I read lots of reviews on both candidates. Maybe I'm just cheap, but they led me to believe that there was not much difference between the two (other than "softness"). Well, this MOONORHA,HA,HA isn't worth $17.95 - and that's allowing for today's crazy market prices. Absolute junk, IMO...