Which innovative Nike shoe technology was initially developed using a waffle iron and revolutionized running shoe design in the early 1970s?

Test your knowledge about groundbreaking product innovations in sports footwear! The athletic shoe industry has revolutionized performance through technological advancements over decades. From cushioning systems to responsive materials, these innovations have helped athletes break records and changed how everyday consumers experience athletic footwear. This question focuses on a pivotal moment in sports product innovation history.

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Nike Air cushioning system
Waffle outsole pattern
Nike Flyknit upper material
Nike Shox columns