Heidi Zak

“Catch-Up With David”: ThirdLove’s Heidi Zak and David Spector

Heidi Zak, David Spector, David Solomon

Co-founded by Heidi Zak and Dave Binnings, Third Love disrupted the intimate apparel market by leveraging a proprietary "Fit Finder" algorithm that analyzed millions of user data points to address the statistic that 80% of U.S. women wear incorrect bra sizes. The company successfully scaled its operations to produce hundreds of thousands of units monthly without external venture capital, distinguishing itself from competitors through a female-centric culture and marketing focused on inclusivity rather than traditional retail narratives. This data-driven approach, combined with their dual-CEO leadership model, enabled the founders to refine 70 unique bra sizes and build a resilient supply chain that prioritizes precise fit and customer satisfaction over conventional industry practices.