June 16, 2026, 7:45 a.m. CT Through her cryptic social media activity on Monday morning, Caitlin Clark and Nike appear to have begun the initial rollout phases of the Hawkeye great's signature shoe, the Caitlin1. These subtle, yet significant changes occurred on Clark's Instagram page, as she changed her username to "Caitlin1" and switched her profile picture to an extreme close-up of the material used in her new shoe, which appears to feature a pattern identical to her "CC" brand logo.