Simian Classic Slackline Kit with Carry Bag The Simian Slackline kit contains: 1 x 50ft Slackline (2 webbing), Ratchet, Tree protectors (2 units) & Carry bag. Set up in less than 5 minutes. Slacklining improves balance and core strength. 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 intermediate users.