Check the listing for details. 300FT Zip Line Kit for Kids and Adult - Up To 400LBS Quick Tighten Zipline Kit. Color: Blue, Condition: New. Listed at 179.99 USD. Outdoor Zipline Safety First: Constructed with high-strength stainless steel cable and pulley, this equipment includes safety lanyards, adjustable seat belts, reinforced swing seats, and extended spring braking mechanisms to ensure maximum safety. The zipline is capable of supporting up to 400 lbs. Additionally, the adjustable seat height accommodates children of various ages and sizes Enhanced Installation System: Replacing traditional turnbuckle tightening, our innovative ratchet-based tightening mechanism allows for faster, easier, and more efficient installation. The ratchet tightens the webbing and connects a steel shackle to secure the steel wire rope and ratchet system, providing a safer and more reliable zipping experience .