Element with progressive cushioning - the Energy Absorber Evolution by Fixe! The Impact absorber can be installed between two Carabiners instead of a Express sling and rips up in case of a fall. By this, the energy peak of the Impact force is withdrawn and unsafe placements in stone or on ice will be strained less. Contrary to other absorbers the Energy Absorber Evolution is progressive: the system rips open from 1.7 kN on, another rip starts at 2.2 kN. By this, the Impact force is withdrawn even better - and the system itself only weighs 52 g.