Simian FunLine Slackline 40ft Kit with Helpline The Simian Slackline kit contains: 1 x 40ft Slackline (2 webbing), Ratchet, Help Line, Tree protectors (2 units) & Carry bag. Set up in less than 5 minutes. Slacklining improves balance and core strength. Help Line gives beginners an easy start into slacklining. Please follow the instruction manual and enjoy. Maximum user weight 220lb. The nice and sturdy ratchet allows to adjust the tension to suit the users preference, start tight for beginners and a little loose for more advanced slackliners.