The search for a suitable sofa sometimes turns into real torment, because it is difficult to choose something adequate in price, quality and model. But if you know the advantages of a particular option, then you will deal with the desired faster.
Suppose you live in a small apartment you want to furnish. Or you have a house in a border, but in one of the rooms there is not enough space to place all the necessary furniture there. How then to choose a sofa so necessary for the room, but taking an incredible amount of space?
It is for such purposes that the sofa is suitable. Its peculiarity is to clean and lay out at the right time. That is, when you need a sleeping place, you immediately lay it out, and if you need more space for guests, then the sofa also folds quickly. This is the main advantage of a rolling sofa.
It may seem to you, in old memory with grandfather sofas, that transformation mechanisms will creak and demand incredible efforts from you, but today modern models do so that even the child will cope with laying out.
The mechanisms make such that they are simultaneously simple and reliable. You can hide the sleeping part under the seat, and when you pull the special loop, then instantly get the bed. That is, no effort will not be required at all.
In fairness, I must say about the minuses of this design. Firstly, sooner or later the mechanism can fail, and there is nothing to do with it anymore. You will have to either use the sofa only as a seat, or the master call. If you choose the model more expensive, then it will last longer. Do not even consider cheap options for this reason.
And secondly, when laying out between the main and put forward seats, a difference is formed and now it does not allow to sleep with complete comfort. You have to lay pillows or special backs.