Serta Perfect Sleeper Best Day 12" Firm Twin XL Mattress

Featuring an 825-coil density system, this supportive mattress offers zoned comfort and pressure relief with a lumbar gel support band and Cool Twist® Gel Memory Foam that contours to your body-with upgrades available with more cooling layers and support. Serta® Serta Perfect Sleeper Best Day 12" Firm Twin XL Mattress