Which innovative retail strategy did Nike first introduce in 1990 that revolutionized the sports retail experience and has since been widely adopted by competitors?

The sports retail landscape has transformed dramatically over the decades, with brands employing innovative strategies to capture market share and build customer loyalty. This trivia question explores a pivotal moment in sports retail history that changed how athletic products are marketed and sold. Test your knowledge about the evolution of the sports retail industry!

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Niketown concept stores (large, experiential retail locations focused on brand immersion rather than just product sales)
The athlete endorsement loyalty program (offering discounts based on purchasing products from the same athlete's line)
Interactive digital kiosks for custom shoe design (the original in-store customization technology)
Sports performance guarantee (offering full refunds if products didn't improve athletic performance within 30 days)