Who knows the meaning of the black symbol to the left of the rider’s name and what the shirt stands for?
Looks like the volcano KOM jersey symbol.
Jungle Loop leader jersey.
Didn’t realize how similar the volcano KOM jersey was to the jungle jersey icon 
I’m talking about the icon, not the jersey (the one questioned in by the OP):
Here’s the icon (left of the rider name in the list)
It is the Volcano Circuit Lap. Originally, the leader received a black jersey. However, when the volcano climb kom was released, Zwift discontinued the black jersey. Now, only the volcano climb leader’s Jersey is given and it is orange and black.
I will look for a picture of it. Funny, when I did a search for it, I found a post “Bring back the b;ack leader’s jersey”….it was my post.
EDIT {A bit of a mistake on my part, the black jersey was planned but not released. However, the lap jersey worn was the volcano lap jersey (which is now the volcano climb jersey.) The icon next to the rider’s name for the lap jersey has always been the black jersey icon.}
I would still love to see a black jersey award for the volcano lap.
Lol, are there like 50 jerseys available? More than we need, so why not have two more that are already built into the system.
Thank you all.
I was focused on the shirt, not the icon.