CaaStle is a logistics platform that integrates with companies’ inventory systems. Through this access, it's able to manage an entire rental process on the company's behalf; from warehousing and cleaning garments to gathering feedback from customers about how an item fits. So far, CaaStle has partnered with American Eagle to power the first rental service aimed at Gen Z, Bloomingdale’s for the first rental service from a department store, Scotch & Soda to launch the first men’s rental service, and Banana Republic. “Clothing rentals have gone from something a couple of startups were doing to something being adopted by old-school retailers,” told CaaStle founder and CEO Christine Hunsicker FastCompany. CaaStle has also launched its own multibrand rental service Haverdash for women. At $59 a month, it's the most affordable one on the market.