A balance sport, Slacklining utilizes nylon webbing stretched tight between two anchor points. It is distinct from tightrope walking in that the line is not held rigidly taut — it is instead dynamic, stretching and bouncing like a large rubber band. The line’s tension can be adjusted to suit the performer and different types of dynamic webbing can be used to achieve a variety of feats. The line itself is flat, due to the nature of webbing, therefore keeping the slacker’s footing from rolling as would be the case with an ordinary rope. The dynamic nature of the line allows for imposing tricks and stunts.

Christian Schou holds the Guinness World Record title for the highest slackline after crossins a Norwegian fjord in Kjerag, Norway at 3,280 feet (1000 meters) — the equivalent of 3 Eiffel towers high.