How long can the Purple® Mattress stay rolled up in its packaging? We recommend you unroll the Purple® Mattress within two weeks of delivery. Related articles Should I wait to sleep on my Purple® Mattress after unrolling it? Can I put the Purple® Mattress back in the bag it was delivered in? How can I do that? Does the Purple® Mattress off-gas? Does the Purple Mattress Come in a Box? What kind of mattress protector do I need?