Hi heytonytony,
I would be a little careful with this. When the mattress is shipped it is compressed so it can ship UPS but if you ship it back it will need to be returned with their large item service which is truck shipping and much more costly. Sometimes in my experience the amazon rep will only look at the way it was shipped originally and not realize that if it needs to be returned the shipping method will change and it may be more costly. If you want to make sure of this then I would make sure you talked with their “large items” department which is a different department from their normal returns … just to be on the safe side. See post #11 here.
Phoenix