Bicep Strap/buckle

These straps are attached to the sides of the jacket and wrap around the bicep for a more secure restraint. 

We generally make the leather bicep straps so that they can come off the jacket when not in use unless requested otherwise. This is done by sewing a metal strap keeper to the sides of the jacket and having a loose strap/buckle that runs through it. 

Tension buckle jackets such as the classic or the mummy will have attached bicep straps.