(Image credit: Birch)However, the simplicity of the design is likely what keeps costs down — it's a tactic used by many of the best mattresses in a box.And while the build is modest, the materials are high quality. The natural cotton and latex are both known for their breathable feel to aid temperature regulation, while latex has excellent durability. They're also both certified organic, with GOLS and GREENGUARD GOLD recognition.Birch says this mattress has a medium-firm feel and based on our testing of the Birch Natural Mattress, we predict this is largely accurate but that it might skew slightly firmer. With only one foam layer, there's not much to sink into.

(Image credit: Birch)Birch also describes the bed as "responsive" — considering our experience on the "bouncy" Birch Natural, that's probably apt.So, a medium-firm mattress with a responsive feel and a cooler build. It's likely to suit back and stomach sleepers and we're interested to see how it stacks up against the best cooling mattresses we've tested.But perhaps most excitingly, the Birch Essential follows the trend of more affordable organic mattresses. Could low-cost latex beds be the next big thing in sleep comfort?

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