Reminds me of a drawing of a horse I did in elementary school. I had no idea what a halter or bridle was supposed to look like, so I just drew a ton of straps all over the horse’s head until it looked like it was wearing a leather net on its head.
It just seems really confused, like it hasn’t decided what it wants to be when it grows up.
If I want to use a standing martingale with my horse who goes in a drop, I just put a regular caveson on underneath. I’ve never needed to use a standing with a figure 8, but if I did I’d do the same.
Also, because the back of the figure 8 and the caveson are attached on either side by a piece of leather, I imagine getting a correct fit would be tricky on most horses and impossible on some.
That “High Jump Revolution” bridle looks like a variation of a crescent/lever noseband. Also, the lack of a throatlatch looks odd to me. Unlikely to make a difference in how the bridle works, it just looks naked to my eyes.