Retractable Zipline Rig

A compact spool of high-tensile cable paired with a quick-fire anchor and a smooth-running pulley, letting the user rig a controlled descent between two points - a rooftop and the street below, or across a gap - far faster than finding stairs or a ladder.

Setting it up safely still takes a few seconds of aiming and anchoring, and its maximum span is limited by how much cable the spool can hold.