The Porte-Iolet is a studied removable system devised by Rodcle that allows us to occasionally fix the ice ax to the backpack without leaving any trace on the backpack itself when we do not need carry the Ice Ax.
In order to use this system, the backpack must be equipped with the Fixing Hole system, which consists of equipping it with strategically located holes that allow the use of a Porte-Piolet.
Assembly: