This month, we had the chance to interview Mark Zheng, co-founder of Sene, a sizeless clothing company. Together with his cofounder, Ray, he’s built a company that creates pieces one-to-one for each of its customers. They carry zero inventory. We dig in to how they manage to pull that off, what exactly "sizeless" means and why it’s top of mind for big retailers right now. We also talk about what he’s learned as a founder, and how Mark’s relationship to work has changed in the midst of it.