Which innovative product launch by Nike revolutionized the running shoe market and became one of the most successful athletic footwear lines in history?

In the competitive world of sports retail, innovation is constant. But sometimes, a single product launch fundamentally transforms an entire category. This trivia question focuses on one of the most significant breakthroughs in running footwear—a moment when technology and marketing brilliance combined to create a retail phenomenon that competitors are still trying to match decades later.

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Nike Air Max (1987), featuring the first visible air cushioning system
Nike Cortez (1972), the company's first track shoe designed by Bill Bowerman
Nike Free (2004), designed to mimic barefoot running with flexible grooves
Nike Shox (2000), with its distinctive column-based cushioning system