meaning rival brands would be free to make similar sneakers. Nike leadership implored designers and developers to use the relatively new Zoom Air tech, which put tensile fibers in cushioning bags ...

Known for its distinctive colors and designs, the Ekiden series is a particular line of Nike running shoes ... the Alphafly 3, Rival Fly 4, Vaporfly 3, and Zoom Fly 6. Each shoe has a fiery ...