Do Memory Foam Mattresses Sleep Hot?

Why memory foam can retain heat and what design choices can improve temperature regulation.

Memory foam can sleep warmer than more open constructions because it contours around the body and restricts some surface airflow.

Why heat builds

Close contouring increases body contact with the mattress, and solid foam cores do not move air as freely as coil systems.

What helps

Open-cell foam, breathable covers, less enveloping firmness, coil cores and breathable bedding can all affect temperature.

Treat cooling labels carefully

Gel, copper and other infusions may influence thermal behavior, but no ingredient alone guarantees a cool sleep experience.