The backrest of the bed has become a necessary piece of furniture for many households. It is a light chair for rest. It supports the user's waist (lumbar vertebra) with a support point. The backrest of the sofa is low in height and the angle of the backrest is also small, which is not only conducive to rest, but also reduces the size of the entire sofa. This kind of sofa is more convenient to move, light, and occupies a small area. Five-SPEED ADJUSTMENT convenient back chair Read books, play with mobile phones, play with computers, and feel at ease~ Free folding Convenient storage Multi-speed adjustment.