Maximum resistance and lightness for a cutting-edge leash with a Kevlar core. It is externally coated with a polyurethane spiral which acts like a spring perfectly following the skier's movements. It reduces most of the annoying risks such as getting tangled in branches or spurs without ever being in the way during walk mode. The leash is equipped with a ring which allows attachment to the boot in case it can't be applied directly on it; to be inserted in series with the carabiner.