Polyester Lanyard connects rider's harness to the trolley. Lengths include 2 FT, 3 FT and 4 FT, but the most common is 2 FT. These Lanyards are made from nylon, they're rated up to 3200 lbs and are made in America. Needs Carabiner to connect Lanyard to Trolley, but the Harness end connects with a cow hitch knot.