Memory Foam is known as a slow recovery sponge. NASA firstly invented it to make seat and bedding for astronauts. It can relieve the pressure on astronauts and pilots.

NASA unveiled the material to the public. Two companies, Swedish and Danish, went on to refine NASA's inventions. Ultimately, it becomes a TEMPUR material. Mattress uses this technology. TEMPUR has become the best-known brand of Memory Foam products.

The comfort level of Memory Foam is higher than ordinary sponge. It mainly shows its temperature and viscoelastic characteristics.

The temperature sensing property enables it to sense the body temperature. The body temperature becomes softer. It absorbs the pressure of the human body. Adjust the human body posture to the most comfortable posture. The lower part of the body is not exposed to the temperature. It can maintain sufficient support.

The slow rebound material adjusts the irregular shape of the compression to the most balanced state. It can slowly deform to adapt to compression. It provides the most uniform support.

This property relieves stress on astronauts. It avoids the pain and discomfort caused by rebound pressure or gravity. Medical devices use the substance. It can relieve the pain of most patients.

Yet feeling gentle and slow rebound brings drawbacks.

High density materials have poor air permeability by themselves. Its unique thermal characteristics have shortcomings. The body's temperature rises when sleeping. The mattress can become softer. Your body will sink with it. This can lead to people sleeping hotter and sinking in the summer.

People have developed on the basis of the traditional Memory Foam. Open-hole Memory Foam and gel Memory Foam appeared. These products can improve on this lack of air permeability. Users can feel cooler. Mattress support capacity increases accordingly. The higher the density, the greater the weight. High-density Memory Foam mattresses are heavy. The slow rebound feature will reduce comfort for those who like to roll over during sleep. Memory Foam itself is an environmentally friendly material. It has the function of eliminating mites and bacteria. Many of the products have flame-retardant materials. Some materials are not environmentally friendly will be a certain risk of pollution.

Shopping Tips:

The density has great influence on the performance of memory foam. The higher the density, the better the performance. The Memory Foam of body sense is excellent. Density wants 80D above at least. The performance of low-density Memory Foam may not be as good as ordinary sponge.

Some raw materials of high-density Memory Foam are expensive. Small factories can hardly afford the order quantity and price of raw materials. So, don't fall for those cheap so-called Memory Foam products on the Internet. They could be super soft sponges.