Vests
You may just think that wearing a biker vest is all about the show, but it goes way deeper than that. This is why when people just buy a Hells Angels biker vest with their logo, they can be seen as wannabe posers. Vests are a sacred thing in this community and are anything but a gimmick.
A vest is a symbol of your gang and part of your identity, you need to wear it at all times and display to the world just who you are. If you are ever arrested, you need to give up your vest to a fellow member, in order for it not to be destroyed or lost in the prison system.