The basic idea is that you tension a length of webbing between two points and balance on it. Sounds pretty simple but what happens when you do this is really quite amazing.

Slacklining is very different from tight rope walking in that the line is not rigidly taut, it is dynamic, stretching and bouncing like a huge rubber band, it kind of a cross between a tight rope and a trampoline! The lines tension can be adjusted to suit the user, and every line that you set up, can have a different height, length and tension. The line itself is flat, due to the nature of webbing, keeping your foot from rolling off, as would be the case with an ordinary rope. The dynamic nature of the slackline is what makes it unique, in that you can do tricks and stunts, the line is totally responsive to you body.