Because American Giant's supply chain can be traced all the way back to the US cotton fields, with fabric being specially woven and dyed for it, getting a new shipment of raw materials wasn't as simple as making a phone call and waiting for an overnight delivery.

BBC: American Giant: The problems of being an overnight success

In tie-dying, bundles of ramie threads are bound tightly with cotton before dying so as to produce a geometric or floral pattern when the thread is woven into fabric using a simple back-strap loom.

UNESCO: Culture