FREE Double bed with twin that slides underneath . Can probably use as bunk above instead with added legs. No twin mattress . The double mattress is 5 years old but only slept on fewer than ten times . I paid $250 plus for the double mattress. Bed is sturdy solid wood. This is free because this like new mattress has been in the weather so it is stained a bit but smells perfect to me. If you need a full size mattress, cone and take a look!