Sofas contain a

Inside the corner sofas contain a special filler, which makes them with mowed and comfortable. Manufacturers use a password, polyurethane, synthetic winterizer and other fillers. Springs can be added: this is done so that the sofa serves for a long time and does not deform. VIP class corner sofas are also made, such models are equipped with additional elements, for example, it can be a built -in bar or a small corner table.