Which innovative loyalty program feature has Nike successfully implemented that resulted in a 30% increase in repeat customer purchases among its athletic community?

The sports retail industry has seen dramatic shifts in how brands build customer loyalty. From simple punch cards to sophisticated digital ecosystems, loyalty programs have become crucial competitive differentiators for sports retailers. This trivia challenges your knowledge of how major sports brands have innovated in the customer loyalty space. Can you identify which groundbreaking loyalty strategy has transformed customer engagement in the sports retail sector?

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Exclusive early-access to limited-edition products through achievement-based tiers in their Nike+ membership program
Bitcoin rewards for customers who log 100+ miles in Nike-tracked workouts
Rental subscription model allowing members to swap athletic gear four times annually
Carbon footprint offset credits awarded based on sustainable product purchases