The pack type safety lanyard is mainly designed for shock absorbing. It has a specially woven core that enables it to expand by approximately 1 meter whenever the climber falls from the climbing surface. The large extension greatly reduces the shock that would have been created without such an extension. It also comes with a special back up kit that includes a safety strap to ensure maximum protection against any form of injury. The tabular lanyard is also known for its great shock absorbing capabilities. It can also extend by 1 meter to arrest any external fall forces.
The double-legged safety lanyard is yet another interesting type of safety equipment that is used to protect the climber from external shocks in the occasion that they fall. Just as the name describes, it can be used to support both legs during climbing expeditions. However, caution should be taken whenever one is not using one of the legs. The unused legs should not be attached or clipped to external forms of support or rigid structures using a harness (for example the side D rings). Such connections inhibit the operation of the inbuilt shock absorbers of the double-legged lanyard.
Connection of the double-legged safety lanyard to a fixed support means that the unused leg will not protect the climber from external shock in the event that they fall. However, this does not mean that the leg cannot be connected whatsoever to a harness. The climber can connect the unused lanyard to a pull-free ring through a safety harness. The pull-free ring will automatically disengage when the climber slips and allow the shock absorbing pack to employ its functions properly. Most shock absorbing packs are manufactured to protect the climber against shock forces above 4kN.