Balenciaga is next in the luxury sweep to formally enter resale. The fashion house’s pre-loved program officially launched Monday, in partnership with resale start-up Reflaunt. Cofounded by Stephanie Crespin, Reflaunt already partners with luxury purveyors like, most recently, Saks Off 5th, as well as Yoox Net-a-porter, Ganni, Mr Porter, COS, TheOutnet and Harvey Nichols. Just this year, the company scored $11 million in series A funding. Its differentiator is its resale button that integrates seamlessly on product pages and allows a brand’s customers to list items in a few clicks across some 25 resale marketplaces. Reflaunt handles the documentation, authentication, photography and merchandising of goods.