Featuring a three-zoned coil design, the Perfect Sleeper 12" Cobalt Calm mattress from Serta offers pressure relief and extra-firm support where you need it, with a Cool Twist® Gel Memory Foam that contours to your body.
Product Features
Innerspring
Extra-firm
Top type: tight
Coil count: 491
Mattress is compatible with an adjustable bed; box spring is not
Breathable Cool Twist® Gel Memory Foam gently cradles your body while promoting enhanced airflow
CoolFeel™ fabric cover
850 Edition Custom 3 zoned support Coil System of individually wrapped coils provides contouring, cradling support from edge-to-edge, minimizing the impact of your partner's movements
