During the second world war, ergonomics developed rapidly, people began to pay attention to the mattress structure, materials, soft hardness and other effects on human health. Now the mattress industry is booming, an enduring industry that ranges from $ 60,000 high-end mattresses stuffed with horse hair hand-combed by nordic women to less luxurious ordinary mattresses.
Now, mattress industry practitioners are figuring out how to describe ugly " rectangles" as health-friendly machines. Sleep index mattresses are a product of comfort options, a air mattress that evaluates people's sleep index, expressed as numbers 1 to 100, and allows people to adjust the amount of air they inflate to control the softness and hardness of the mattress. Creatively, the left and right sides of the mattress can be controlled separately, meaning that husbands and wives who sleep on one bed can adjust the mattress's softness to suit themselves without affecting each other.
Several generations of American consumers have a strong sense of identity with the spring mattresses of the three famous brands sealy, serta and Simmons that start with " s". A Gallup poll 10 years ago also showed that nearly half of Americans don't know what brand of mattress they sleep on.
Comfort options and another mattress industry giant changed the way mattresses were made in the late 1980s and early 1990s, replacing a century-old spring with air and foam, which cost as much as $ 7,000 a mattress. Comfort options funded mattress research, which was sold at Stanford and duke university labs and claimed that people had significantly improved sleep quality on sleep index mattresses.
In 2005, Americans spent $ 4.6 billion on mattresses, a quarter of which were non - spring mattresses. So what do Americans sleep on? Manufacturers starting with " s" produce a large number of mattresses made from viscoelastic foam ( also known as memory foam ). For decades, latex bed, gel bed gradually become a fashion. At the same time, the myth of " harder mattresses are better" has been broken, and " comfort" has become a new selling point. Manufacturers unleash all their energy and do everything they can to create a new generation of mattresses with the latest high-tech materials. Mattresses pile up layer by layer, getting thicker and thicker, like towers with various popular labels.
Human persistent pursuit of mattress, but want to get comfortable sleep, but sleep is not like most things in the world, you try to get can get it, no matter how high technology also can't let a person want to sleep.