Mattress. Monday , May 15th , 2017 - 21:00:58 PM
Basically, when you lie down on a coil mattress there is a tension between the coils and the sleeper. The sleeper's weight is pushing down of the coil and the coil is pushing back against the sleeper. Despite some advances in design, with coil springs the sleeper conforms to the shape of the mattress.
Companies make such a big deal about the edges of mattresses. Restonic uses 'Super Edge Plus Technology' to ensure a firm edge; Sealy uses 'Unicased Edge Design'; and Serta uses 'Advanced Encasement Design'. What each of these manufacturers is trying to tell you is that they all use a piece of high density foam wrapped round the edge of the mattress to encase the springs - that's it and nothing more.
The coil is then covered by 5 zone convoluted high density foam. There is also a fire blocker insulator. An edge support system comes as standard with the Serta Perfect Sleeper mattress. The idea is that this durable edge provides lasting strength while extended the sleeping surface and preventing 'roll-off'.
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