Nana is including a sofa bed as well. Opening of the bed is such a simple operation and con be done by only one person. Two arm alternatives - 8 and 14 cm - total width of 211 or 223 cm. Comparing to Nana sofa with out bed, the front part is slightly different. The cushion is a bit thinner and the leg of the sofa is 10 cm in height, where as the regular Nana is 14 cm.