Not every breakthrough in sports science begins in a lab. For Nike’s iconic waffle sole, one of running’s most game-changing innovations, it began in the kitchen.
It was 1971 and Bill Bowerman was wrestling with a problem he’d been turning over in his mind ever since a hard, slick new urethane track had been installed at the University of Oregon two years prior, which was injuring runners. Bowerman had to face a reality: He had chosen a track surface that wasn’t holding up, and he needed to find a fix. How could his runners get better grip? Spikes dug in too deep; flats didn’t bite enough.
He poured liquid urethane straight into the family waffle iron, only it instantly glued shut permanently, ruining their 35-year-old wedding present. Undeterred, he drove into town, bought several more secondhand waffle irons, and kept experimenting. Those first imprints came out inverted with concave bumps, but they sparked the idea that would lead him to refine molds and materials until a workable prototype finally emerged.
The waffle sole changed everything. Not only did it transform how runners thought about traction and cushioning, it showed people what Nike was about: solving problems in new ways.