Cooling mattresses are infused with cooling gel technology. Cool gel memory foam is infused with millions of tiny gel microbeads that absorb the heat released from your body. Incredibly, these beads can know exactly how much heat to store, and how much to release, so you stay at an optimal temperature all night long.Cool gel memory foam also has an open-cell structure, so air can flow more easily throughout the entire mattress. This enhances ventilation and reduces heat retention, so you stay cool. A cold mattress can be incredibly beneficial to your sleep, but it's a personal preference whether you want your bed warmer or colder.For even more information, you can read our Gel Foam Mattress Buying Guide.