Does this memory foam mattress sleep hot?

It runs neutral, a little warmer than a spring bed. Cooling scores 7.9: a SoftLux breathable cotton cover and breathable poly layer move heat at the surface, but an all-foam core cannot flush warmth the way an open coil chamber does, so the memory foam holds some body heat. Peak surface temperature holds in the 30.2 to 33.0 degrees C range. A neutral sleeper is comfortable; dedicated hot sleepers will notice the warmth.