When it comes to tech innovation in the sneaker industry, Nike gets most of the credit. But Puma has been a pioneer as well, creating the first laceless Velcro shoe in 1968, as well as the first shoe with wireless connectivity in 2016. The "Fi" is Puma's first self-lacing sneaker and it incorporates cables that run through the upper and an electronic unit on the tongue. An upward finger swipe tightens the cables once they're on, and Puma says their proprietary sensing system will then learn the shape of your foot for the best fit. It can all be tweaked using a smartphone app, which allows you to adjust while running. Designed for workouts and running, it's due to hit store shelves in 2020.