Puma's RS 100 - inspired by the classic RS Computer
We're going truly old skool here, but these new Puma shoes are inspired by the circa 1986 RS Computer trainers.
At the time, the RS Computer was revolutionary, involving a pedometer computer chip inside the trainer.
Info from the pedometer, distance run and the like, could be downloaded to your Apple II via the game port and a big ol' chunky lead (no easily removed parts back then).
Sadly with no electronic components, these nonetheless evoke the retro tech spirit, so are a decent, and probably less smelly, alternative.