“What is slacklining?” is a question that seems simple and quick to answer. But it’s not the case. Slacklining is a sport that consists of practicing balance on a dynamic line, stretched between two fixed points. The slackliner can walk on it or perform dynamic or static tricks.
This is a very general and reductive perspective, suitable only for low-altitude slackline practice. To really understand what slackline consists of, we must understand that it is a multi-modal sport. It can be practiced in different contexts and with different goals, being generally subcategorized.