When you step onto this line, you better have some tricks up your sleeve.
"It is a 2-inch webbing of woven nylon and polyester that is stretched super tight about 70 feet long and 5 feet off of the ground," said Alex Mason, a Red Bull professional slackliner. "When you stretch it super tight the fibers become dynamic."
Tricklining is a growing competitive sport, and world champion Alex Mason, AKA 'the machine,' is always searching for scenic places to stretch the limits.
"There is actually a pretty large community in Hawaii already that slacklines," said Mason. "It really took off in South America and in Brazil, and overseas, and it is growing in America."
This 18-year-old, competes across the globe and he has performed complicated stunts in front of iconic landmarks. Before he can do exploding flips-- bouncing on and off the webbing-- he says it takes extensive training.
"Some of the tricks can take months to years," said Mason. "I try to get on a trampoline as much as possible, and train a lot of rotations... a lot of gymnastic rotations."
Mason says the tension force of the slackline can support the weight of almost two cars. Even though it supports more than enough weight, just walking on the slackline is much harder than it looks...
"It is a pretty steep learning curve," said Mason. "It is difficult, you have to train your brain to learn how to walk on something that is moving."
Mason hopes to return to the Aloha State, to set up what he calls the epic line in paradise.
"Red Bull has a really awesome project that we are thinking about doing on one of the islands," said Mason.
Until then, the sky is the limit.
Competitive World of Slacklining