I'm a racing fan but know nothing about Thoroughbred training or race-day equipment. However, I know we have plenty of people on here who do! :)
I occasionally see a horse outfitted like Derby hopeful I'll Have Another. What is the purpose of the piece that looks almost like an elastic noseband, which connects to the bit but runs up between the eyes and looks like it goes over the poll? Also, is that some sort of "breathe-right" patch on his nose?