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A Serta Perfect Sleeper Cobalt Calm Plush Pillow Top Mattress in a bedroom setting, showcasing the mattress with pillows on top and a nightstand beside it.

Serta Perfect Sleeper® Cobalt Calm Plush Pillow Top Mattress 15"

SKU CobaltPlush-t
by Serta
$1,199.00 - $1,699.00
$1,199.00
$1,199.00 - $1,699.00
$1,199.00

Serta Perfect Sleeper® Cobalt Calm Plush Pillow Top Mattress

Experience a luxurious, cloud-like sleep with the Cobalt Calm Plush Pillow Top Mattress from Serta’s Perfect Sleeper® collection. This plush mattress features a 3-zoned coil system for targeted support, plus cooling technologies like Cool Twist® Gel Memory Foam and Phase Change Material—perfect for hot sleepers who crave comfort without sacrificing support.

Key Features

  • 🌀 Cool Twist® Gel Memory Foam
    Cooling gel is swirled into breathable memory foam to enhance airflow and contour to your body for a cool, supportive feel.

  • 🎯 3-Zoned Coil Design
    Offers targeted support where you need it most—hips and lower back—while cradling the rest of your body.

  • 🛡️ Anti-Microbial Technology
    Helps keep your mattress fresh by reducing odor-causing bacteria.

  • 🛌 Plush Pillow Top Feel
    Soft and cushiony surface with gentle body-hugging comfort—ideal for side sleepers or anyone who prefers a softer sleep experience.

  • 🔄 Custom Support Coil System
    825 individually wrapped coils offer cradling support while minimizing motion transfer for undisturbed rest.

  • 🌡️ Phase Change Material
    Actively regulates temperature by absorbing excess body heat and releasing it when needed—keeping you in the perfect comfort zone all night.

  • 🧱 BestEdge® Foam Encasement
    Reinforced edges for better stability, more usable sleep surface, and added durability.

Mattress Feel

  • Comfort Level: Plush with Pillow Top

  • Best For: Side and combination sleepers who prefer a soft, contouring feel

  • Support System: Zoned coils + plush top + cooling foams = pressure relief + support

Compatibility & Use

  • Works with most frames: box springs, platform beds, slatted frames, and adjustable bases

  • Recommended with a mattress protector for longevity

  • Easy to care for: spot clean with mild detergent; air dry

Indulge in softness, sleep in cool comfort, and wake up refreshed.
Order the Serta Perfect Sleeper® Cobalt Calm Plush Pillow Top Mattress today and feel the difference from the very first night.