Now home life more diverse , pluralistic format , the pursuit of characterization , like our single sofa bed size is a typical example , a single sofa bed a bit trying to modify the size of a big point , and some need to be single sofa bed size piecemeal point, no matter how to change a single sofa bed that can be counted as either bed , and can be counted as a sofa , is a multi-functional household items & nbsp; single sofa bed size height preferably 35-42 between cm , which is about equal to the height , too high or too low, the size of the human leg are not conducive to human muscle relaxation , and prolonged use can lead people to physical pain. Single Sofa bed size seat depth should be between 48-55 cm and a height single sofa bed size should backrest throughout abutment between 68-72 cm in the scale of the human body is the most gentle . , And single sofa bed size armrest height should be between 62-65 centimeters.