The Firefly 

The Firefly provides climbers a safe way to bail without having to leave gear on the crux of the climb. This device is lightweight, durable, and works with most carabiners, both solid and wire gates.

The pull cord included in the package is a 50ft long 275-paracord; however, any length of cord can be used with the device. The Firefly has been used to retrieve draws off of 120ft walls and even around rock ledges. This is the piece of climbing equipment you will never want to be without!