Does this Serta Perfect Sleeper sleep cool?

Yes, it runs cooler than most beds, scoring 9.3 for cooling. A 1-inch gel-infused foam layer at the surface draws heat off the skin, while the 1050 pocketed coils keep air moving through open channels rather than letting it pool. Because this is a tight-top with a moderate 5-inch comfort layer rather than a deep pillow-top, there is simply less foam to trap heat, which sharpens the result. Surface temperature stays around 29 to 32 degrees Celsius.