The best choice of mattress should start with the function of the mattress. The function of the mattress is to ensure that the consumer gets a healthy and comfortable sleep. There are two criteria for a good mattress: one is that the person can stay straight stretched regardless of the sleeping position; the other is that the pressure is equal, and the person lying on the whole body can be fully relaxed. This involves the softness of the mattress.
The softness and hardness of the mattress depend on the softness and hardness of the liner spring. In addition to the necessary hardness to support the spring, the spring should also have a good resilience, that is, the so-called rigid and soft. Too hard or too soft, rebound is not ideal. The mattress that is too hard is lying on the top, only the four points of the head, back, buttocks and heels are under pressure. The rest of the body is not completely dead. The spine is actually in a tight and tense state, which not only does not reach the best rest. The effect, and sleeping on such a mattress for a long time will also be detrimental to health. A mattress that is too soft, the person sinks down when the body is lying down. The spine is bent for a long time, causing pressure on the internal organs. It takes a long time, which is also unhealthy and uncomfortable. Therefore, a soft and moderate mattress should be used.