S4 Nebula Medium Soft Mattress in a modern blue bedroom setting on an upholstered platform bed frame. Exploded view of the S4 Nebula 12" Hybrid Mattress layers showcasing comfort foam and pocketed coil system. S4 Nebula Luxury Hybrid Mattress corner cutaway view showing cooling foam layers and pocketed coil support. Medium Soft 12 inch Hybrid Mattress in a minimalist bedroom setting on a dark grey platform bed. S4 Nebula 12 inch Hybrid Mattress side view featuring black diamond-quilted fabric and blue accents. Luxury 12 inch Hybrid Mattress shown on an adjustable base with the head elevated in a bedroom setting. Internal layers of the S4 Nebula Hybrid Mattress showing multi-layered cooling foam and reinforced coils. Medium soft S4 Nebula Hybrid Mattress in a modern bedroom setting on a minimalist upholstered platform bed. Profile view of the 12 inch S4 Nebula Hybrid Mattress featuring black diamond-quilted fabric and blue trim.
S4 Nebula Luxury 12" Hybrid Mattress – Medium Soft
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S4 Nebula Luxury 12" Hybrid Mattress – Medium Soft

$699.00
$1,399.00
Save $700.00
Brand: iDealBed
Size
Best for Side, back and combination sleepers
i Size Guide
$699.00
Out of stock
Free USA Wide Delivery Free USA Wide Delivery
10 Year Warranty 10 Year Warranty

The iDealBed S4 Nebula 12" Medium Soft Hybrid Mattress greets you with a cloud-like pressure point relief feel that side and combination sleepers adore. 

Its medium soft wrapped coil comfort curve balances plushness with responsive lift, so you never feel stuck. 

Inside, layers of gel-infused cooling memory foam pair with iDeal Air Adapt® foam to draw heat away, while an Aloe-infused Smart Temp® Tencel cover stays cool-to-the-touch. 

Moreover, an individually wrapped coil system anchored by EdgeGuard foam delivers optimal spinal alignment support and isolates motion for couples. 

Because of this synergy, sleepers with hip or shoulder tension can experience genuine pressure relief in a hybrid mattress. 

And, every Nebula arrives with a 120-night risk-free trial, free USA shipping, and a 10-year limited warranty. So you can buy iDealBed S4 Nebula online with total confidence.

Advanced Cooling Cover

Smart Temp® Tencel knit keeps surfaces refreshingly cool all night.

Dual-Foam Pressure Relief

Gel Reactiv + Air Adapt foams cradle curves for deep restorative sleep.

Dynamic Coil Support

Individually wrapped springs adapt to each zone, reducing partner disturbance.

Edge-to-Edge Stability

EdgeGuard high-density rails let you sit or sleep right to the edge.

Plush-Yet-Balanced Feel

Medium-soft profile cushions joints while maintaining healthy alignment.

Key Mattress Benefits

S4 Nebula Luxury 12" Hybrid Mattress – Medium Soft

6 Layers
Of Cooling
Comfort

Breathable Tencel fabric with Aloe infusion wicks moisture and keeps the sleep surface cool and hypoallergenic.

Fiberglass-free cotton layer provides safe flame resistance while maintaining airflow and comfort.

Cooling gel foam contours to the body while drawing heat away for improved temperature regulation.

Responsive foam adapts to body curves and promotes even weight distribution for balanced comfort.

Supportive transition foam enhances stability and ensures smooth weight transfer into the coil system.

Individually wrapped coils provide targeted support and reduce motion transfer, while reinforced edges improve stability across the mattress

S4 Nebula Luxury 12" Hybrid Mattress – Medium Soft
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CLOUDY MATTRESS IS THE SMARTER CHOICE

From better sleep support to trusted quality, Cloudy Mattress gives you more value for your money.

SHIPPING

FASTEST SHIPPING

Get your new mattress delivered quicker than ever with our priority nationwide shipping. No long waits, comfort arrives right at your door step, fast.

CUSTOMER SUPPORT

24 / 7 CUSTOMER SUPPORT

Whether its day or night, our dedicated team is always available to answer questions, resolve issues, and guide you through every step.

GUIDANCE

EXPERT GUIDANCE

Not sure which mattress suits you best? our sleep experts are here to help you choose the perfect option tailored to your comfort, health and lifestyle needs.

GUARANTEED

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HAVE QUESTIONS?

WE'VE GOT ANSWERS

Designed for deep comfort and better rest, so you wake up refreshed and ready for the day

Yes. The mattress is rated “Medium Soft Comfort” and specifically highlighted as “Best For: Side & Combination Sleepers,” providing ample shoulder and hip cushioning.

Unlikely. Smart Temp® Tencel fabric, ThermalRelief gel memory foam, and a ventilated BreezeFlow panel work together to dissipate heat for a cooler night’s rest.

iDealBed labels this model “Medium Soft,” the sweet spot between plush and medium—ideal if you like a gentle cradle without excessive sink.

Most 12" pocket-coil hybrids flex comfortably on quality adjustable bases. If you plan to pair one, choose an adjustable frame with at least 850 lb combined capacity.

Similar hybrid models reach 90% height within 4-6 hours and full profile within 24 hours. Keep the room temperature at 68 °F to 77 °F for best results.

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