The Power of the Partner Voice in Sportswear: How Top Brands are Driving Growth
Driving growth through impactful partnerships
For leading sportswear brands the Partner Voice has become the strongest growth driver in 2025, delivering a 23% YoY increase in Media Impact Value® (MIV®), surpassing Voices like Media, Influencers or Celebrities. This momentum highlights how the right partnerships can propel a brand’s authority in sport, strengthen credibility and boost desirability.
What You’ll Find in This Report
Chapter 1The performance of the Partner Voice in sportswear
Chapter 2Behind Castore’s partner success
Chapter 3Four steps to drive growth through the partnerships
INTRO
Inside the Partner Voice Growth
For brands like Castore, the Partner Voice sit at the core of their growth strategy, accounting for 60% of the brand’s total MIV—nearly 7x the industry average. This alone shows how central partnerships have become to Castore’s visibility, ROI and credibility in leading sports.
This report uncovers how sportswear brands can successfully grow their performance through partnerships, with case studies and actionable insights for turning Voice strategy into measurable ROI.
- The Voices creating value for sportswear in 2025
- How Castore leverages partnerships to build authority and performance
- Actionable steps to strengthen ROI through a Partner-led strategy