Does this mattress actually sleep cool?

Yes, it is the coolest bed we have measured, scoring a perfect 10 out of 10. The surface peaked at 30.1 C in testing and stayed in the low-25 C range by morning, so it does not creep warmer overnight. Three layers drive it: a CoolFeel cover, a graphite-infused memory foam that pulls heat from where your body touches, and a breathable micro-coil tier, all over a 2550-coil core that keeps air moving instead of trapping it.

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