Adventure moves to the backyard with this 52 foot zip line kit, rated up to 500 lbs for kids and adults to ride together. Upgraded ball bearings inside a reinforced steel trolley glide smoothly, while the swing seat, handlebar, seat belt, and nylon safety harness provide dual-layer security on every run. Two tree protectors guard bark during installation, and the included tensioner pulls the line taut in minutes without special tools.