Why can functional sofa lie 160 degrees only?
At this time the human body should be in the most relaxed state, functional sofa design is based on these ergonomic principles to design! I hope I can help you!
It may be noted that when the body is lying flat on the sofa or the front chest is in a straight line with the legs, the back is not parallel to the chest, the hips, forelegs, and neck form a triangle
