Read my profile of Barreworks in the fitness section.
Read my profile of Ferris360 in the fitness clubs section.
Slacklining is an activity that involves balancing and walking across a nylon rope (similar to the sensation of walking on a tightrope), and has been growing in popularity across Toronto. Unlike a tightrope which is kept fairly taut, a slackline is more dynamic and "bouncy," which allows advanced users to practice more than just walking from one end of the line to the other.
In general, slacklining as an activity requires very little investment; at the very least, you need the line itself, ratchets to secure the line with, and tree protectors. David Wilkins from Trial Tensions was kind enough give our group a free lesson using his own equipment.