Black elastic strap with metal attachment clips at each end. These were fitted to the Irvin using the small brass 'eyes' sewn onto the rear of the collar. Often referred to as spare goggle straps but were in fact used to help pull the collar into the upright 'stand' position. It is a bit worn/soiled, retains little elasticity and has a subtle repair near one end. Minor tarnishing on the the connectors and adjuster slide. Remarkably difficult to find. Beware of copies! Stock code J24562A.