The club will host its second Slacklining for Trees event and competition Friday on the Norlin Quad from 10 a.m. to 6 p.m.
Last year, the group raised more than $200 in donations for plantabillion.org, an organization that plants one tree for every dollar raised in an effort to restore the Atlantic Forest in Brazil.
This year, the group will be selling their new treehuggers, which is protective gear that provides a nylon barrier between the tree and slackline, said Michael Bross, club founder and president. The treeware can be purchased at $10 a pair.
"They're more durable than what's out there now and half the price," Bross said. "I have a company called Guber Gear and this is our first product."
Slacklining is legal on the Boulder campus but tree protection is required, Bross said.
CU Police spokesman Ryan Huff said the rope must be less than 50 feet long and no more than 4 feet off the ground.
"We haven't issued many tickets, if any, because most of the slackliners know the rules or quickly comply with them when asked," Huff said.
For more information about slacklining rules visit www.colorado.edu/policies/CUUF.
After less than a week in production, Bross said he's already made 20 pairs of the nylon wrappers, which include loops made of recycled slacklines to hold the lines in place.
"Slacklines are not very recyclable because they're made of petroleum, so we're using recycled slacklines to make the loops on the treeware," Bross said. "We're killing two birds with one stone."
Protecting the trees they use for slacklining on campus is a priority for the club, said Spencer Roberts, a slacker and one of the event organizers.
"We want to show a mutual respect for the grounds crews and facilities crews here at CU that we're working with them, with a common love of trees," Roberts said.
There will be six slacklines set up at varying difficulty levels on the west side of the Quad, Roberts said. At 4 p.m. the King of the Trees slacklining competition will begin. Entry is $10 and includes a pair of Guber Gear Treehuggers.
Slackers said the event is mostly about having fun but they're hoping to raise awareness about deforestation and the etiquette of slacklining.