A cool gel mattress is memory foam mixed with cooling gel, a heat-dissipating gel blended into the foam, usually as tiny gel beads or swirls. The gel helps draw heat away from your body while the foam cushions and supports. Pair that with a breathable cover, and you get a mattress that stays comfortably cool and feels wonderfully cushioned.

Why it matters:

* Helps you sleep cooler
* Pressure relieving comfort
* Motion stays put (great for couples)