The Serafina PerfectTemp™ Mattress caters to your climate and firmness needs, so experiencing your best sleep is satisfyingly simple. The PerfectTemp™ cooling system boasts more Phase Change Material than any other Novaform mattress, helping you find your ideal sleep temperature. Phase Change technology removes excess heat to help you relax and fall asleep quickly. It also prevents your mattress from getting too cold, so you stay comfortably asleep. Phase Change is infused inside the gel memory foam and added as a layer on top, providing even more cooling. This four-layer, 14-inch build delivers superior support and pressure relief. Our premium foams keep your back and body aligned, which reduces tossing and turning for longer periods of deep sleep.