Which of these sports products was launched with great fanfare but became one of the biggest retail failures in sports history, being discontinued within 18 months of its release?

The sports industry has seen many innovative products come and go, but some high-profile launches became legendary failures despite massive marketing budgets and star athlete endorsements. This trivia question explores one of the most notable product failures in sports retail history. Can you identify which athletic item bombed spectacularly despite its innovative premise?

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• Nike HyperAdapt 1.0 self-lacing shoes (2016)
• Reebok Pump Up sneakers (1989)
• Adidas miCoach SMART BALL with embedded sensors (2014)
• Under Armour HealthBox fitness tracking system (2016)

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