Which sportswear giant suffered a major retail failure with their 'Olympic Vantage' smart shoes that tracked athletic performance during the 2016 Rio Olympics, leading to a $140 million write-off?

The sports retail landscape is littered with ambitious products and campaigns that failed to connect with consumers. Some of these failures happened despite massive marketing budgets and celebrity endorsements. This trivia question focuses on one of the most notable sports retail flops associated with the Olympic Games - a product launch that spectacularly missed its mark despite the global stage and significant investment behind it.

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Nike
Adidas
Under Armour
Puma