As long as you like! If you feel like keeping it for 1, 2, or even 3 months, you can. We are an unlimited monthly subscription rental service, which means we will only charge you once a month and you will never pay for shipping or late fees. The idea is to create multiple looks utilizing your own wardrobe and what we have sent you. When you are ready to receive another pack, mail back your current pack and once we receive it back at our facility, we will begin preparations on your next one. One pack can be rented at a time.