Does the Serta Classic hybrid sleep hot?

It runs cooler than most beds, scoring 8.3 out of 10 with a measured peak surface temperature around 30.1 C. The firm tight-top build is the reason: with only a half-inch of comfort foam you rest on top rather than nesting in, and air moves freely through the 800 pocketed coils instead of pooling around you. There is no gel or phase-change layer, just a breathable performance-knit cover, but the open coil core handles heat naturally.