Does a thick pillow-top like this sleep hot?

No, it stays cool, earning a perfect 10 out of 10 for cooling. The copper-infused phase-change cover, breathable comfort foam, and a micro-coil layer move heat away from the surface, with measured peak temperature near 30.5 C, cooler than typical. Even at 16 inches with plush padding, the cooling materials sit at the sleep surface, so a soft feel does not mean a warm one here.

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