Warehousing & Fulfillment is a service that lets you store your non-Printful products at our warehouse, and we’ll pack and ship them to your customers when orders come in. The way it works is that you mail us the products you’d like to store at our warehouse, we receive them and stock them, and when an order comes in, we pack and ship the product to your customer.
Check out this video for a more detailed explanation on how the service works, how much it costs, etc.