A damping device for a collapsible ladder having an inner ladder tube section and an outer ladder tube section with an inner side wall, the inner ladder tube section being slidably arranged with the outer ladder tube section, the damping device comprising:
- a main body having a top portion adapted to be arranged at least partly in the inner ladder tube section, and at least one mounting means;
- and
- an asymmetric damping block adapted to be arranged in the at least one mounting means;
- wherein the asymmetric damping block has at least one surface slidably abutting the inner side wall of the outer ladder tube section when arranged in the collapsible ladder.