Climber's Kit

A Climber's Kit includes boot tips, gloves, pitons, and a harness. As a Utilize action, you can use the Climber's Kit to anchor yourself; when you do, you can't fall more than 25 feet from the anchor point, and you can't move more than 25 feet from there without undoing the anchor as a Bonus Action.

Source: System Reference Document 5.2 · CC-BY-4.0 · 5th Edition 2024