Memory foam mattresses feel very soft when the hand holding the memory foam will feel the palm constantly empty down, just like holding the sand in the hand slowly loss. There was no tension, and you wouldn't get tired even if you squeezed for a long time. When you lay on the memory foam mattress, you would feel the gradual sinking process, as if you were trapped in a quagmire, at the same time you can also hear the memory foam mattress in the subtle sound of gas constantly flowing.
Sponge to do mattresses, to human rest help is huge, now all walks of life with very extensive, but do the following conditions to do sponge mattresses, there will be no harm to the human body,
1. Sponge to environmental tasteless,
2. Use to often breathable, blow clean, or bask in the Sun.
Hope you have a sponge mattress that can do this, but to use memory cotton as the material of the mattress, memory cotton has a good rebound characteristic, decompression, temperature sensitivity, and anti-bacterial mite characteristics.