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Serenity Z Series 8 Cali King

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Was $7,399

Regular price
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New Zealand Made
New Zealand Made
Beds R Us 10 Years Warranty
10 year warranty

All images are indicative only. Any accessories photographed are not included.

Selecting the right mattress size is an important decision. There are a number of factors to consider, such as how much space you like, or if you sleep beside someone. Singles and Doubles are ideal choices for one person, while we’d recommend couples sleep in at least a Queen or King size bed. We’re here to help eliminate any confusion that comes with deciding which bed size is right for you. 

  Mattress (cm) Base (cm)
Single 91x188 91x188
Long Single 91x203 91x203
King Single 107x203 107x203
Double 137x188 137x188
Long Double 137x203 137x203
Queen 153x203 153x203
King 167x203 83.5(x2)x203
Super King 183x203 91.5(x2)x203
Cali King 203x203 101.5(x2)x203
I have completed an online order, what will happen from here?
Once your order is completed, it will be assigned to the store closest to you to process and arrange delivery. A staff member will contact you on the phone number provided to organise a date and time that suits you. Please note orders are processed on business working days only.
How long will it take for my new bed to be delivered?
This will vary depending on the model you wish to purchase. If your require your bed by a specific date please contact us with the bed model and size, your location and when you require the product. We can then give you a more accurate lead time.
 How do I return an item?
We do not accept returns for products purchased through the website so please choose carefully. If you are unhappy with your purchase please contact us and we are happy to discuss options with you.
How do I cancel my online order? 
Call your local store to advise them of the cancellation. They will need to notify the support office at of your cancellation & order number. We will be in touch with you to process the refund. 
What countries do you deliver to?
We currently deliver to addresses within New Zealand only. 

The Full Review

For those seeking the ultimate comfort from our Serenity range, the Z Series 8 blends the natural luxury of Wool into the top panel, presenting a premium plush feeling mattress.

Comfort layer technology for premium pressure relief and cooling

With the addition of superior memory foam - Fusion Gel, we've ensured better pressure relieving capability and the added heat absorbing potential of the gel particles.

Less partner disturbance, great support yet comfortable

The Serenity Z Series features our exclusive 3 zoned ActiveSense support system made here in NZ by Sleepyhead. This innovative and advanced pocket spring provides targeted and improved support by utilising the alternating zones of the two stage coils. Combined with the reduced partner disturbance properties this technology offers, you're well on your way to better quality sleep.

This mattress satisfies our most discerning customers

Proven to be a top seller. A truly comfortable mattress, yet customers feel supported right across the surface of the mattress, thanks to the solid foam edge support.  


  • Plush Feel
  • Minimal Partner Disturbance - features our exclusive, state-of-the-art 3 zoned independent pocket spring support system, that provides reduced partner disturbance for more rejuvenating sleep
  • Nature's Gift - wool is dust-mite resistant and hypo-allergenic, helping to regulate body temperature
  • Fusion Gel - its pressure relieving ability plus the heat absorbing properties of the infused gel particles, provides additional proven comfort
  • Active Sense Support - innovative two stage pocket coil that detects and responds to pressure where you need it most
  • Eco-Friendly DreamfoamGel® - this new generation gel infused foam technology provides great support whilst balancing your temperature.
  • Comfort Edge - provides edge-to-edge support and reduces roll out
  • 10 Year Warranty - quality you can trust with Sleepyhead's 10 year guarantee

    Comfort Level

    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • 10

    The Technology Behind The Bed

    Comfort Edge Logo
    Solid foam edge provides support right to the edge of the mattress which reduces the roll out feeling.

    Technology Dreamfoam

    A unique foam structure with a plush feel provides extra support and luxurious comfort.

    Technology Dreamfoam Gel

    This new generation of gel infusion technology provides great support while balancing your temperature.

    Technology Fibre Wool

    Wool is dust-mite resistant and hypoallergenic, as well as being incredibly breathable and able to help in the regulation of body temperature. 

    Technology Fusion Gel

    This proven comfort layer technology combines the pressure-relieving ability of our superior Memory Foam with the heat absorbing qualities of gel particles.

    Technology Pocket Spring

    Heat tempered pocket springs sit independent of each other in the mattress, so only those springs in direct contact with the body move to provide support where needed.


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