Tips for selecting materials

How to measure the softness and hardness of a mattress
How to call it moderate softness and hardness? The simplest measurement method is to lie flat and extend your hands inward towards the three obvious bends between the neck, waist, and buttocks to the thighs to see if there are any gaps; Turn over to one side again and try the same method to see if there is any gap between the concave part of the body curve and the mattress. If there is no gap, it proves that the mattress is perfectly aligned with the natural curves of the neck, back, waist, buttocks, and legs during sleep. This type of mattress can be said to be moderately soft and hard. Everyone has different preferences for the softness and hardness of a mattress. Some people like to sleep on a hard bed, while others prefer to sleep on a soft bed. What is the best hardness mattress? Thirty years ago, there was a discussion in Germany about whether a hard mattress was better or a soft mattress, which sparked the participation of the German ergonomics academic community and led to research on human sleep posture. The research result is that both hard and soft mattresses are detrimental to human health and sleep, and the correct mattress should be a high elasticity mattress. That is to say, when the force applied to the mattress is large, the mattress should drop much and provide more support to the human body, and vice versa. This is because the human body is a curve, and only on a high elastic mattress can the body and back be supported, especially the waist needs strong support, so that all parts of the body can relax and get sufficient rest. Due to the shallow S-shaped shape of the human spine, it is necessary to have appropriate hardness support when lying down. Therefore, elastic mattresses are crucial for the comfort and quality of sleep of the human body. Choosing a mattress should not rely solely on self perception, neither too soft nor too hard is appropriate, but rather on the difference between height and weight. Lighter weight individuals sleep on softer beds, allowing their shoulders and buttocks to slightly sink into the mattress and provide sufficient support for their waist. Those with heavy weight are suitable for sleeping on harder mattresses, and the strength of the springs can provide proper support to every part of the body, especially the neck and waist. You can refer to the height, weight, and mattress softness comparison table, which will be more scientific.