Which innovative athletic footwear product launch created a new retail category and generated over $1 billion in first-year sales through its revolutionary cushioning technology?

Test your knowledge of revolutionary retail product development in the sports industry! Major athletic footwear brands are constantly competing to create breakthrough technologies that enhance athlete performance. One particular product launch changed the game for running shoes and created a whole new category of performance footwear. Can you identify which innovative product introduction transformed the market and set new standards for athletic shoe design and marketing?

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Nike Air Max (1987) with its visible air cushioning system
Nike Free (2004) with its flexible, minimalist design
Nike Flyknit (2012) with its sustainable one-piece woven upper
Nike React (2018) with its proprietary foam technology combining cushioning, energy return, and durability