It's not a harness...it replaces the widely used chained choke collars.  This collar was worked wonders for me   It keeps the neck/head up.  The top ring/loop sits where a typical choke chain would reside - slightly behind the ears during a correction.  This collar avoids the mishaps that could possible happen with a regular choke chain ie neck injury/throat injury etc etc.

Imagine 2 collars with supports going from one to the other all the way around.

I use this is one by Cesar Milan.  I have no idea where it's made though.

http://www.cesarmillaninc.com/products/i-collar.php

Oh for cryin out loud.  I just discovered this & HAD 2 of these bowls in use 24/7 holding water and here I have cat with IBD .  Cripes, have now gone to tupperware.