With advanced motion isolation, consistent support, cooling comfort, and a lofty quilted top, Harmony supports more than just your body with a lush, sustainable sleep surface made with plastic bottles diverted from the ocean.
Featuring a 3 zoned coil design, the Serta Perfect Sleeper Cobalt Calm Extra Firm mattress offers pressure relief and support where you need it, with a Cool Twist® Gel Memory Foam that contours to your body—with upgrades available with more cooling layers and support.
Our premier support system, advanced cooling technology, and a lofty, quilted top—perfect for those who prefer a lifted feel—create a first-class sleep experience. Now available in three unique models for your best sleep ever.
Our premier support system, advanced cooling technology, and a lofty, quilted top—perfect for those who prefer a lifted feel—create a first-class sleep experience. Now available in three unique models for your best sleep ever.