So fun fact! This type of helmet is a type of "closed helm" called an Armet which has cheek plates that open up and close around your neck. This portion of the helmet that protects your neck and chin is called a "bevor".
Here it is opened up.
The other type of closed helm, simply called a "close helm" has the bevor and visor attached to the same hinge like this example:
Lol yessir! Like my other helms and props as well!