I purchased the LUCID four inch thick folding mattress and sofa from Amazon to use in a spare room as a guest bed. It looked like an excellent solution because when folded, it stays out of the way and only cost $139 (for the queen size) vs. hundreds of dollars for a murphy bed, wall bed, bunk bed, futon or trundle bed. While the folded sofa floor chair orientation isn’t very high and looks a bit like a kids bench, it did feel comfortable enough as I stretched my legs out. This portable folding bed would be excellent for sleepovers, a kids room, camping, storing at a cabin or even in a dorm room and can work with bed frames if you want to raise it up to look more normal.

While researching this mattress I discovered that there’s an older version with more square look vs. the angled back rest. I like how comfortable this one felt when folded up though I haven’t tested the older one, just this new one. LUCID offers a five year warranty and the cover has zippers so you can remove the foam inside and then machine wash the cover. Apparently the foam inside is CertiPURUS certified to have no harmful odors and is resistant to dust mites and safe for children. The listed weight is 28.1 pounds but I weighed it at 22 lbs with my own luggage scale. The dimensions and size are 60” wide x 80” Long x 4” thick.

Lucid folding mattress: http://amzn.to/2jzVT00
Folding bed frame: http://amzn.to/2icTL93