Which innovative sports product launch in the 1980s created a new category and was developed after its founder observed athletes removing the cushioning from their shoes to improve stability?

The sports equipment industry continually evolves through technological innovation. One particular breakthrough revolutionized athletic performance and created an entirely new product category that generated billions in revenue. Test your knowledge about one of the most significant product launches in sports retail history that changed how athletes train and compete.

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Nike Air technology with visible air cushioning
Reebok Pump customizable fit system
Cross-training shoes (Nike Air Trainer)
Reebok Freestyle aerobics shoes