|Density is one of the most important things to consider when purchasing
memory foam. In many ways, density is what makes memory foam unique. NASA
memory foam mattresses are complete systems, and so the buying tips on
this page apply more to our discount memory foam overlays than memory
The density of the visco elastic foam is usually talked about
in terms of pounds per cubic foot, or more often, simply
pounds. "Visco Elastic" is the technical term for "Memory Foam". As a general rule, denser
visco elastic foam is always better.
Memory foam mattress overlays made with high density foams...
- Mold better to the body...
- Have a slower rebound (a longer "memory")
- Are more durable...
- Are more responsive to body temperature...
- Provide more support...
How Do You Sleep?
If you tend to sleep mostly on your
back or side, almost any memory foam mattress topper will work for
you. Because the 3" memory foam overlays do such a good job of
conforming to your body, A1 recommends that "stomach sleepers"
purchase a 2 in. memory foam overlay rather than a 3 in. If
you are a very active sleeper, you should also consider a thinner
memory foam overlay.
What do we sleep on?
Most of us here at A1 sleep on our
5lb overlay or our
12" mattress. If you sleep hot
we recommend our HRC systems.
Two Important Rules...
- You should not consider any foam with less
than 3 pounds density. It just doesn't provide the proper support.
- Higher Density foams can be warmer to sleep
on because they hold more heat as they are denser and do not allow
you body heat to escape. If you choose a high density foam,
be sure to upgrade with the HRC
memory foam ventilation system
in order to keep cool at night if you are a warm sleeper.
More Information On:
Mattresses and Beds
How Sleep Aid Foam
Can Help You Sleep