Full Motion mattresses cause the hammocking effect. Because the central part of the body has more mass, your body sinks deeper throwing the head and legs upward. This makes it very difficult to sleep in any other position than flat on your back.
If you have spent years sleeping in this position, changing may take patience. Be sure to set your heater to a warmer setting until you are used to a new firmer mattress. This will help the transition.
Wavelessness and Firmness
We feel there are two primary considerations for selecting a waterbed
mattresses from us that relates to comfort.
- Waveless Rating
- Firmness
A Waveless Rating tells you how much motion there is in a mattress. A
100% waveless mattress will move very little - motion stops
immediately. At the other end of the spectrum is a full motion
mattress which has nothing inside it, typically it moves for 10 seconds or
even longer.
Firmness relates to the thickness of fiber layers and number of layers
in a given mattress. More layers of fiber result in a firmer
mattress. Each brand and line has different fiber layers.
Our Firmness Scale
Very Firm - Firm - Firm Stable -
Supple - Plush - Plush Soft - Soft - Very Soft
This gives you a general idea of how firm our mattresses are in relation to each other. Mattresses below 90% waveless have less support so you may have little movement, but you will sleep lower in the mattress. This is why we show a profile view with our ratings on the product pages.
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