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. The elastic is in very good overall condition retaining much elasticity and both connectors are excellent. Minor tarnishing on the the adjuster slide. Remarkably difficult to find. Beware of copies! Stock code J23649.