Spectrum Sports International debuted the first commercially available mobile zip line at the 2011 IAAPA Attractions Expo. The introduction followed three years of product development, a complete engineering review and a season of testing in four markets. The Mobile Zip Line employs several innovative features. The Rotating Safety Gate eliminates fall exposure until riders are attached to the zip line. The stopping device allows riders to travel at an unrestricted speed before automatically slowing the ride. It then returns the gear to the top of the zip line tower for the next rider. Several elements of the new attraction are patent-pending. The Mobile Zip Line is 28’ tall and features two zip lines that are 130’ long each. IAAPA Attractions Expo attendees had the opportunity to see and ride the new zip line in Orlando, Fla.