This is an air mattress, with a collapsible frame. It is queen size measuring 78" long x 58" wide, and 28" tall. You need an airpump that doesn't come with the mattress. A heavy duty PVC airbed and steel frame can last quite along time. It inflates in just minutes.The expandable frame compacts into a wheeled storage case for storage or movement from place to place. This bed is great for indoor use or even outdoor use, because it is compact and moveable. Also easy to fold up the frame for storage.
We purchased this for extra company that stayed here when my son got married. Because it was portable we could move it after every use. They said it was nice to be off the floor and feel like you were sleeping in a regular bed. Company commented on how they slept good.
When we went camping, the bed was great in our sons tent. Sleeping on the hard ground is not for him and his wife. Over time a few holes have developed, but the repair patches seem to get the repair fixed. We use this often an it can be stored with other camping equipment. An extra bed is always useful when company visits, and no sleeping on the hard ground anymore when camping.
Update On Mar 24, 2010: I let someone use this an now i have to replace the blow up queen bed.. Probably cost more than replacing the whole bed. It was a great bed for camping or when company came..