Guardian Internal Dual Leg Shock Lanyard Rebar Hooks - 6 ft.* The Internal Shock Lanyard doesn't stretch and it doesn't have a shock pack, so your fall protection lanyard stays light while still providing shock absorbing protection. * This safety lanyard is made with a heavy duty outer polyester webbing and polyester core specially sewn into the lanyard to reduce forces. ** This lanyard is also available with snap hooks.