Availability for online order: On order in about 9 to 14 days
 
Find your calm with the Cobalt Calm mattress, a masterclass in sleep innovation from Serta's Perfect Sleeper series. This exceptional mattress combines cutting-edge cooling technology, superior pressure relief, and targeted support to create a sleep experience like no other.At the heart of the Cobalt Calm is the revolutionary Cool Action Gel Infused memory foam. This advanced material uses superior space technology to perfectly contour to your body, providing immediate pressure relief the moment you lie down. The integrated gel particles work to regulate temperature, keeping the mattress cool throughout the night and preventing overheating and sweating.
But the Cobalt Calm doesn't stop there. The premium memory foam layer further cradles your body, making you feel weightless and supported throughout the night. This means deeper sleep, reduced tossing and turning, and a more restorative morning.The knitted Tencel fabric cover ensures a fresh, cool sensation against your skin. Tencel is renowned for its breathability and moisture-wicking properties, keeping you dry and comfortable even on the warmest nights.
For unparalleled support, the Cobalt Calm features a 5-zone pocket spring system. Each zone is engineered with springs of varying stiffness to provide targeted support to different areas of the body. This means optimal alignment and pressure relief for your head, back, hips, legs, and feet, regardless of your sleeping position.
The result is uninterrupted sleep, night after night. The Cobalt Calm is ideal for couples, as it absorbs motion and reduces disturbance. Whether you and your partner differ in weight, height, or sleeping position, the Cobalt Calm ensures a restful night's sleep for both.Discover the power of a calm night's sleep with the Cobalt Calm mattress.
The Perfect Sleeper mattress line was designed by Serta in collaboration with the NSF (National Sleep Foundation). NSF is an independent, non-profit organization comprised of physicians dedicated to improving sleep and thus good health. After 5 years of research, Serta & the NSF Foundation designed the Perfect Sleeper mattresses to solve the 5 most common sleep problems.
Springs: 638 for dimension 160x200cm
Height: 30cm (±1cm)
Firmness:6/10
Warranty: 5 years
COOL ACTION GEL INFUSED MEMORY FOAM
Cool Action Gel Infused Memory Foam, which is an improved version of the excellent technology Memory Foam known for adapting to your body, keeps your mattress fresh all night long with its specially formulated gel particles and provide cooler sleep.
PREMIUM MEMORY FOAM
Premium Memory Foam is a superior comfort technology that integrates with your body and absorbs pressure. Relaxes your body and balances your blood circulation.
CUSTOM ZONED POCKET SPRING SYSTEM
The specially developed 5 Zone Pocket Spring System provides appropriate support to different parts of the body with different spring stiffnesses. It provides uninterrupted sleep for couples with different weight, height and sleeping positions.
TENCEL FABRIC
The knitted Tencel fabric cover ensures a fresh, cool sensation against your skin. Tencel is renowned for its breathability and moisture-wicking properties, keeping you dry and comfortable even on the warmest nights.