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Two sided versus one sided mattresses
First-- I DID read the intro posts! Very helpful info on this site.
I had just about decided to get the Dreamfoam Ultimate Dreams Latex mattress when I realized it was a one sided mattress! I really don't like that, and I think a two-sided mattress that can be flipped will last almost twice as long. I'm now looking at the White Lotus brand mattresses, which are all two-sided. They send chair cushion sized samples to try out so I'm waiting for my samples from them.
What is your opinion on one sided versus two sided mattresses? Do they last as long, and are they a gimmick by the mattress industry to sell more mattresses?
I know Dreamfoam is a member here and generally gets good reviews. Anyone know anything about White Lotus? whitelotus.net
I don't have the exact links, but Phoenix has previously written something along the lines of: all materials eventually break down, especially the softer versions of those materials. A two sided mattress, if flipped / rotated, may see the comfort layers last longer. Even latex, which is very durable, will last longer in a 2 sided mattress. That said, a two sided mattress cannot be as progressive / have as many layers, because instead of having the full depth of the mattress to have various layers, only half the depth can be used (since both sides need to be the same). Therefore, while more durable, it prevents more elaborate layering which may impact PPP for you.
I think dn covered most of the basic tradeoffs between one and two sided designs in the previous post but you can read more in some of the posts he mentioned including post #2 here and post #2 here and post #2 here and some of the history behind one sided mattresses in post #3 here .
There is more about some of the other factors that can contribute to durability and the useful life of a mattress relative to different people in the durability guidelines here as well.
There are also other ways besides a two sided design that can decrease the long term cost of owning a mattress (price vs useable life) outside of using higher quality and more durable materials.
One of these includes a mattress that has individual components or layers with a zip cover that can be replaced individually instead of having to replace the entire mattress. This would normally involve the top layer because a mattress will tend to soften and break down from the top down. Individual layers can also be flipped individually. This also has the advantage of being able to make changes to your mattress either to fine tune the feel and performance after a purchase of to make changes down the road if your needs and preferences change.
There are also many smaller local manufacturers that will open up a "finished" mattress and replace one of more of the layers either after a purchase if it needs to be fine tuned or to rebuild it down the road if one of the layers needs to be replaced.