Slackline Industries Boss Line - 85ft Competition Style Trickline Kit with Backup Lines, Tree Protectors INSPIRED BY THE EVOLUTION OF TRICKLINING, the BOSS LINE is designed to replicate a pro slacklining competition line and support advanced tricks. Created for pros but a favorite line enjoyed by all. HIGH PERFORMANCE TRICKLINE featuring trampoline-style webbing with rubber grip and a high-powered tensioning system with independent anchoring and safety backup line. HIGH QUALITY XL RATCHETS independent of the anchoring system to maximizes tension and power of the line; High performance polyurethane coated webbing delivers optimal energy return. INCLUDED BACKUP LINES are included as an added safety measure; This is an important precaution for tricklining which amplifies force on the line THE BOSS LINE KIT ALSO INCLUDES 2 round slings, 6 feet and 9 feet with a 7:1 safety factor, are included to create a perfect anchor for high-tension trick lining