In my ongoing series of looking back at old issues of Triathlete magazine, I found a column on this new technology called “The Seat Leash”. It provided leverage by keeping the cyclist from sliding backwards on the seat.  Apparently the Italians used a similar design at World Championships for cycling.

(February 1988)

I believe the technology was nixed because the governing body for Cycling, UCI, deemed it an unfair advantage and triathlon followed suit. Anyone with more information on that ruling?