Love this 4 inch thick Memory Foam Mattress. I use it on the living room floor to sit on while watching TV. This folding mattress is very handy to store away when not in use and has handles on it. I like the way it folds to create a back or head rest. It would also make a comfortable enough bed to put on the floor for a guest or for a kid to sleep on. I got the twin size and it is fine for one person to sit on or maybe occasionally use as a temporary bed if needed. I would not use it outdoors.