We needed an extra guest bed and this product does the job perfectly. It consists of three thick pieces of foam which slot into a zippable cover. It comes in a number of different colours - our first choice was a rather striking shade of pink which unfortunately clashed with the rather striking shade of pink in the bedroom. Gilda were very obliging in changing the cover for just the modest cost of postage so well done there!
The bed unfolds in seconds, and is large enough to comfortably fit an adult. It is 27 inches wide, but be careful as some of these cube beds are only 23 inches across which I do not think is really adequate. The foam is thick enough for a comfortable night's sleep. Incidentally there is a bit of a trick to getting the pieces of foam in and out of the cover. You have to fold them across the middle so they bend a bit, otherwise getting them in and out feels like mission impossible!
Once folded up the cube is not very obtrusive and quite a useful additional seat. An excellent product.