Have you ever seen a broad and comfortable camping seat that folds up to the size of a 2-litre bottle with the fold-unfold process taking sheer seconds?
      Have you ever happened to spend nights in a camping tour sleeping on a nice broad bed which can fold up to the size of a parcel, less than half a meter long and 10 cm wide?
      Well, we doubt you have. It's just because these things are hardly available.
      It's weird that the humanity, having invented high-speed vehicles, having set foot on the Moon; striking the world with ever-improving computer technologies and means of communication has not found time to design a few things millions of people cannot do without.
      Everybody knows that to travel with pleasure and to work efficiently one should take a good rest and have a good night's sleep. Therefore, such things as compact-size seats and beds are absolutely necessary for travelers, members of all kinds of expeditions, hunters, fishermen and even for soldiers of military units that are sometimes maneuvered far off.
      It's so nice to unfold a compact-size chair somewhere in a park and take a seat in any place you like instead of sitting on bulky benches that stand in the full blaze of the sun when you dream of hiding in the shadow or, quite the contrary, in the shadow when it is cool outdoors and you want to warm yourself in the sun. Besides, the benches can be wet and cold after the rain. Finally they can be all taken.
      Such a seat is a must for a landscapist working in the open country or for a belated passenger in an over-crowded electric train. It's needless to say about a picnic in the countryside. In short, it finds its usage everywhere.
      Of course, there are and are different designs of folding chairs, beds and tables but they can hardly be called compact, not to speak of air-beds that are so laborious to fold up or inflate.
      Nevertheless the task of designing compact but unfolding to their full sizes chairs and beds has been solved by a Russian, whose name is Sergey Potylitsin. He lives in France.