Rapid length adjustment via the DoubleBack buckle.Equipped with a STRING, which allows the carabiner to be held in the major axis position (the strongest) and protects the carabiner attachment loop from wear.3 mm hole in buckle for attaching a release cord to facilitate adjustment.Equipped with a loop on the free end of the webbing for attaching a piton during placement.Foot retention system helps keeps your foot in the step while jugging.