With overload indicatorThe special safety seam on the snap shackle opens after overloading. If this seam is broken, the safety line must be replaced. The carabiners automatically lock while closed, thus preventing accidental opening. Moreover, this lifeline only weighs 565 g.The lifeline comes with two asymmetrical lengths: 650 mm length (stretchable to 1000 mm) and 1100 mm ( stretchable to 2000 mm).