Shoulder jammer

Vertical caving terminology and methods > Personal SRT gear

Shoulder jammer, shoulder ascender, shoulder Gibbs

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Shoulder jammer attached to a Howie belt style chest harness.
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Shoulder jammer in its usual position, connected to a Howie belt, as part of a three Gibbs ropewalker system rig.

An ascender that is connected to the chest harness on top of one shoulder. In most cases where this is used, it needs to be load bearing, and therefore requires a chest harness that is very strong. Typically, this would be in the form of a Howie belt. The most popular ascender would be a Gibbs, or something similar, that can be easily pulled up the rope by its load bearing attachment point. Used as one of the main ascenders when using the pygmy system, and the three Gibbs variation of rope walking.


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