Ru9 Original mattress has a 3-layer structure with a Memory Foam layer in the middle, forming a height of 25cm. This layer of Memory Foam plays the role of releasing pressure so that your body can relax completely comfortably when lying down. The Nest by Ru9 mattress has 2 layers, excluding the Memory Foam layer, and has a height of 15cm. Therefore, the feeling when lying on the Nest by Ru9 mattress will be firmer.
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