Serta Perfect Sleeper Cobalt Calm Extra Firm California King Mattress - Luxury Firm Support for Back Pain Relief | Perfect for Master Bedrooms & Guest Rooms

Featuring a three-zoned coil design, this 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.

A simple solution for perfect sleep, every night

Designed with zoned comfort for a more restful sleep

Cooling gel is swirled directly into a breathable foam designed to promote airflow and heat dissipation

This unique design features cooling gel swirled into premium memory foam; this breathable memory foam helps enhance airflow and heat dissipation for a feeling that can only be described as a cool, contouring type of comfort

Soft foam provides enhanced cushioning for exceptional comfort and promotes airflow through its unique, gently rippling design

CertiPUR

Cradles you in cushiony softness; ideal for side sleepers