I could not get the link to open right. If I understand right, you are looking at a biothane bitless bridle.
I have owned several. Two were from bitlessbridle . Com and were fantastic. Both of these have been stolen so I have to give up and buy a new one for the filly I am helping my daughter train.
They are great for older horses who been there done that and don't need much to get them to do what they are supposed to do.
They are fantastic for a horse who fights the bit, especially green ones.
They are perfect for a green horse who has learned to bolt with their tongue over the bit as you can circle them to a stop in half the distance it woudl normally take to stop them.
They are good for drivng a calm horse down the road - but not so good with one that wants to bolt.
Just my experience. I am goign to try to post a pic of my Shaman in harness at a medieval games in his biothane bitless bridle... wish me luck!
Failure... here is hte link Kodak Pride - Events 2003
He was four at the time and all the extra is cosutming