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Protect your products
5-Year Accident Cover £22

We know how important it is to keep your new sleep products safe, but we also know accidents can happen. With Accident Cover, we’ll help you keep your bed and/or mattress in their very best condition.

So what is covered?
  • Food and drink spills such as coffee or red wine
  • Ink marks from biros, permanent markers etc
  • Make-up and cosmetic stains
  • Accidental damage caused by pets
  • Burns from heated appliances such as straighteners or curlers
  • Rips and tears
  • Damage causing breakage to the frame
What is not insured?
  • Deliberate damage caused by you or any person
  • General wear and tear
  • Accumulation of damage or staining
  • Any structural or manufacturing defects
  • Accidental staining or damage caused by the use of incorrect cleaning products
Subtotal
Pay Now: £0.00 OR Payments from: £0.00
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Goes like a dream

WHY NOT TRY OUR AWARD-WINNING SLEEP TECH?

FREE PILLOWS, DUVETS, PROTECTORS WITH SELECTED MATTRESSES - ENDS TODAY

Ends 05/05/2025, offer excludes refurbished mattresses and cannot be used in conjunction with other offers/promotions, and is subject to our Terms.
Essential Hybrid® mattress receives two† Pure pillows.
Hybrid® & Earth Source mattress receives two† Hybrid pillows plus mattress protector‡.
Pro Hybrid® & Earth Escape mattress receives two† Hybrid pillows plus a Hybrid duvet and mattress protector‡.
Hybrid® Luxe, Hybrid® Ultra, & Earth Apex mattress receives two† Hybrid pillows plus a Hybrid 3-in-1 duvet, and a mattress protector.‡
†Except Single size mattresses (receive one pillow).
‡ Mattress protector and duvet/s in size matching the mattress purchase.

Super King Size Mattresses

Looking for a sumptuous space to sleep in? Then take a look at our super king mattresses. Whether you’re stretching out solo, in a couple, or part of a growing family, they’re a truly luxurious sleep space. Each super king size mattress features our signature sleep tech for a superbly comfortable sleep, like our responsive Aerocoil® micro springs, and our fresh Simbatex® foam.

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RECOMMENDED BEST COMFORT & SUPPORT
Hybrid® Ultra Mattress hybrid

Free with your Ultra Mattress

1 FREE Hybrid™ Pillow

With any single mattress
WORTH £109

2 FREE Hybrid™ Pillows

With any double, king or super king mattress
WORTH £218
A down-like pillow with adjustable height and firmness for optimum support. Discover more

1 FREE Hybrid™ 3-in-1 Duvet

WORTH UP TO £449
Soft, airy comfort, whatever the season. Winter or warmer, meet your new bedtime hero. Discover more

1 FREE Performance Mattress Protector

WORTH UP TO £169
Designed to prolong the life of your mattress and enhance your comfort. Discover more
Products automatically added to cart. T&Cs

The best of everything

Hybrid® Ultra Mattress

  • 11 Layers

  • Up to 7300 Springs

  • 34cm Depth

  • FusionCool™ Layer

Super King £3,299
Or £79.75 monthly
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LUXURY COMFORT & SUPPORT
Hybrid® Luxe Mattress hybrid

Free with your Luxe Mattress

1 FREE Hybrid™ Pillow

With any single mattress
WORTH £109

2 FREE Hybrid™ Pillows

With any double, king or super king mattress
WORTH £218
A down-like pillow with adjustable height and firmness for optimum support. Discover more

1 FREE Hybrid™ 3-in-1 Duvet

WORTH UP TO £449
Soft, airy comfort, whatever the season. Winter or warmer, meet your new bedtime hero. Discover more

1 FREE Performance Mattress Protector

WORTH UP TO £169
Designed to prolong the life of your mattress and enhance your comfort. Discover more
Products automatically added to cart. T&Cs

Luxury Support

Hybrid® Luxe Mattress

  • 9 Layers

  • Up to 5700 Springs

  • 31cm Depth

  • Bamboo & Wool top layer 

Super King £1,999
Or £48.32 monthly
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Hybrid® Pro Mattress hybrid

Free with your Pro Mattress

1 FREE Hybrid™ Pillow

With any single mattress
WORTH £109

2 FREE Hybrid™ Pillows

With any double, king or super king mattress
WORTH £218
A down-like pillow with adjustable height and firmness for optimum support. Discover more

1 FREE Hybrid™ Duvet

WORTH UP TO £259
A soothing blend of lightweight warmth and softness for year-round use. Discover more

1 FREE Performance Mattress Protector

WORTH UP TO £169
Designed to prolong the life of your mattress and enhance your comfort. Discover more
Products automatically added to cart. T&Cs

Bestselling

Hybrid® Pro Mattress

  • 8 Layers

  • Up to 4800 Springs

  • 28cm Depth

  • Wool top layer

Super King £1,399
Or £33.81 monthly
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Hybrid® Mattress hybrid

Free with your Mattress

1 FREE Hybrid™ Pillow

With any single mattress
WORTH £109

2 FREE Hybrid™ Pillows

With any double, king or super king mattress
WORTH £218
A down-like pillow with adjustable height and firmness for optimum support. Discover more

1 FREE Performance Mattress Protector

WORTH UP TO £169
Designed to prolong the life of your mattress and enhance your comfort. Discover more
Products automatically added to cart. T&Cs

1/2 Million Sold

Hybrid® Mattress

  • 5 Layers

  • Up to 1900 Springs

  • 25cm Depth

  • 9 support zones

Super King £999
Or £24.15 monthly
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Need help choosing a mattress?

Try our mattress quiz
Earth Apex Mattress earth

Free with your Earth Apex Mattress

1 FREE Hybrid™ Pillow

With any single mattress
WORTH £109

2 FREE Hybrid™ Pillows

With any double, king or super king mattress
WORTH £218
A down-like pillow with adjustable height and firmness for optimum support. Discover more

1 FREE Hybrid™ 3-in-1 Duvet

WORTH UP TO £449
Soft, airy comfort, whatever the season. Winter or warmer, meet your new bedtime hero. Discover more

1 FREE Performance Mattress Protector

WORTH UP TO £169
Designed to prolong the life of your mattress and enhance your comfort. Discover more
Products automatically added to cart. T&Cs

The peak of luxury

Earth Apex Mattress

  • 12 Layers

  • Up to 6,700 Springs

  • 32cm Depth

  • Cashgora, silk & wool layers

Super King £2,599
Or £62.82 monthly
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Earth Escape Mattress earth

Free with your Earth Escape Mattress

1 FREE Hybrid™ Pillow

With any single mattress
WORTH £109

2 FREE Hybrid™ Pillows

With any double, king or super king mattress
WORTH £218
A down-like pillow with adjustable height and firmness for optimum support. Discover more

1 FREE Hybrid™ Duvet

WORTH UP TO £259
A soothing blend of lightweight warmth and softness for year-round use. Discover more

1 FREE Performance Mattress Protector

WORTH UP TO £169
Designed to prolong the life of your mattress and enhance your comfort. Discover more
Products automatically added to cart. T&Cs

Sleep sanctuary

Earth Escape Mattress

  • 10 Layers

  • Up to 4,800 Springs

  • 30cm Depth

  • British wool comfort layers

Super King £1,999
Or £48.32 monthly
Shop
Earth Source Mattress earth

Free with your Earth Source Mattress

1 FREE Hybrid™ Pillow

With any single mattress
WORTH £109

2 FREE Hybrid™ Pillows

With any double, king or super king mattress
WORTH £218
A down-like pillow with adjustable height and firmness for optimum support. Discover more

1 FREE Performance Mattress Protector

WORTH UP TO £169
Designed to prolong the life of your mattress and enhance your comfort. Discover more
Products automatically added to cart. T&Cs

Oasis of comfort

Earth Source Mattress

  • 8 Layers

  • Up to 2,900 Springs

  • 28cm Depth

  • British wool comfort layers

Super King £1,499
Or £36.23 monthly
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Hybrid® Ultra Mattress Refurbished refurbished

The best of everything

Hybrid® Ultra Mattress Refurbished

  • 13 Layers

  • Up to 8,500 Springs

  • 34cm Depth

  • FusionCool™ Layer

Super King £1,499
Or £36.23 monthly
Shop
Hybrid® Luxe Mattress Refurbished refurbished

Latest Tech - Most Plush

Hybrid® Luxe Mattress Refurbished

  • 11 Layers

  • Up to 5000 Springs

  • 31cm Depth

  • Bamboo Infused Wool Layer

Super King £769
Or £18.59 monthly
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Hybrid® Pro Mattress Refurbished refurbished

Double Support

Hybrid® Pro Mattress Refurbished

  • 9 Layers

  • Up to 4000 Springs

  • 28cm Depth

  • Pure Wool Layer

Super King £529
Or £12.78 monthly
Shop
Hybrid® Mattress Refurbished refurbished

1/2 MILLION SOLD

Hybrid® Mattress Refurbished

  • 7 Layers

  • Up to 2000 Springs

  • 25cm Depth

  • Original Hybrid® design

Super King £489
Or £11.82 monthly
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Earth Source Mattress Refurbished refurbished

Oasis of comfort

Earth Source Mattress Refurbished

  • 6 Layers

  • Up to 3,250 Springs

  • 25cm Depth

  • Hemp & Flax layer

Super King £649
Or £15.68 monthly
Sold out
Earth Escape Mattress Refurbished refurbished

Sleep sanctuary

Earth Escape Mattress Refurbished

  • 7 Layers

  • Up to 4250 Springs

  • 28cm Depth

  • Wool & Hemp layer

Super King £1,299
Or £31.40 monthly
Sold out
Earth Apex Mattress Refurbished refurbished

The peak of luxury

Earth Apex Mattress Refurbished

  • 8 Layers

  • Up to 5750 Springs

  • 30cm Depth

  • Silk, Cashmere & Mohair layer

Super King £1,679
Or £40.58 monthly
Sold out
Simbatex® Essential Mattress Refurbished refurbished

budget friendly

Simbatex® Essential Mattress Refurbished

  • 3 Layers

  • 19cm Depth

  • Graphite/Simbatex open cell foam, UK sizes only

Super King £279
Or £23.25 monthly
Sold out
Simbatex® Foam Mattress Refurbished refurbished

Cooler, Fresher Foam

Simbatex® Foam Mattress Refurbished

  • 4 Layers

  • 25cm Depth

  • Graphite/Simbatex open cell foam, UK sizes only

Super King £479
Or £11.57 monthly
Sold out
CLEARANCE Premium Zoned Mattress

Full body comfort

Premium Zoned Mattress

  • 3 Layers

  • 19cm Depth

  • 7 Support Zones

Super King £303
Or £25.25 monthly
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CLEARANCE Comfort Zoned Mattress

Support made simple

Comfort Zoned Mattress

  • 3 Layers

  • 19cm Depth

  • Multiple Support Zones

Super King £267
Or £22.25 monthly
Shop

  • What size is Simba’s Super King Mattress?

    The Simba super king bed mattress is the largest mattress we offer, and it fits all standard UK Super King beds, measuring 180cmW x 200cmL. The depth of your super king mattress varies with the type of mattress you select; for example, our Earth range is packed with natural mattress materials and our signature sleep tech, with our Apex model measuring 30cm deep. But our Hybrid® Essential is just 20cm deep, so please check the product details before buying.

    If you’re concerned a Super King will be too big for your space, we recommend considering a King Size Mattress. Otherwise head over to All Mattresses for more details about our range. 

  • Why choose a Simba Hybrid® super king mattress?

    Want to buy a Super King Size Mattress but not sure what’s so special about a Simba Hybrid®? It’s all about the innovative, signature sleep technology we’ve designed, and the balance of support and comfort it creates. Take our cone-shaped Aerocoil® micro springs: they’re engineered to offer better spinal alignment and increase air circulation through the mattress, while our Simbatex® foam is designed to keep your whole body feeling fresher and more comfortable.

  • What makes Simba Earth super king mattresses so special?

    The Simba Earth Super king size mattresses are in a class of their own– featuring a unique blend of our signature tech with some of Nature’s best materials for a truly luxurious sleep. 

  • Find out which Simba super king size mattresses we recommend for common sleep issues:

  • Are Simba’s super king bed mattresses designed for a specific sleeping position?

    Whether you sleep on your back, side or front, our Hybrid® super king mattresses are designed to offer excellent support for all sleeping styles; the combination of our patented Aerocoil® micro springs with pressure relieving Simbatex® is a winner. 

    Recommended super king-size mattress: any Hybrid® Super King Mattress

  • Which is Simba’s best super king mattress for couples?

    Sharing a bed can cause two common sleep issues: being woken by your partner’s tossing and turning and being more likely to overheat. But with their larger sleep areas, our Super King and King Size Mattresses are ideal for couples.

    Simba’s innovative Aerocoil® springs are designed to offer tailored support for each partner, limiting motion transfer from one person to another. Their unique conical design means they compress inwards rather than sideways. Strong but small, they nestle unnoticed at the upper layers of your super king mattress where they support increased airflow - so we think the more the merrier.

    Recommended Super King Mattress: Any of our super king mattresses that feature our patented Aerocoil® springs; Opt for the highest number of springs you can afford for the most tailored support – as in our Hybrid® Ultra. 

  • Which of Simba’s super king size mattresses is best for heat control?

    Did you know your body temperature drops a few degrees when you sleep? So if you’re too warm in bed that natural process is halted, and you might find it harder to sleep. 

    That’s why all our super king Hybrid® mattresses are designed to help keep you cool: our patented Aerocoil® springs help push air gently through the top layers, and our open structure Simbatex® foam supports airflow. Our Earth range also has natural mattress materials to help you stay fresh and comfortable throughout the night.   

    Recommended Super King Mattress: All our Hybrid® super king mattresses are designed for fresher sleep, but any of our Earth mattresses can help you stay fresher more naturally.

  • Which of Simba’s super king size mattress is best for back pain?

    Poor alignment of the spine or inadequate body support may cause debilitating aches and pains. But we’re not medical professionals, so we can’t judge what’s right for your back. What we can say is that we’ve received huge amounts of positive feedback from people who say they’ve suffered from aches and pains, and our Simba mattresses have helped them to reach a great night’s sleep. 

    Recommended Super King Mattress; the Hybrid® Luxe or Ultra super king mattress 

  • How are Simba Super King mattresses delivered and how much does it cost?

    Don’t worry, these luxurious mattresses are delivered free of charge, even in super king mattress sale periods. Some mattresses are rolled and boxed for extra convenience. Our entire Earth range, comes flat, unboxed and ready to go. 

    You have 200 nights to decide whether you are happy with your new super king mattress. But if you decide you’re not, for whatever reason, you can arrange a free collection.  

  • Can I buy a refurbished mattress for a super king bed?

    Yes. We believe refurbishment represents a more responsible use of resources and also gives more people the opportunity to enjoy better sleep at a lower price. 

    So any super king mattresses returned to us are rigorously inspected and assessed by our expert renewal team for refurbishment. Then they’re either recycled or refurbished by our trusted third partners, where they check, deep clean and sanitise every single component, replacing them where necessary, before a final inspection to receive a certified Simba guarantee. 

    For more information check our range of Refurbished Mattresses. 

  • Is my super king mattress recyclable?

    Because we’re committed to sending no mattresses to landfill, all the super king size mattresses for sale at Simba are suitable for recycling via our collection service or specialist providers. If you return a mattress during your 200-night trial (or under our 10-year guarantee), it’ll be refurbished; any with too much wear and tear are recycled. And when your mattress reaches the end of its life, check out the specialised Simba Mattress Recycling Service on our site: pay a small fee, and we collect it for you. Any brand, any size – no Simba purchase necessary.       

    Find out more about our Mattress Recycling Service here.

  • How to care for and maintain your super king mattress

    Rest easy: you don’t need to flip your Simba super king mattress at any point. What we do suggest is rotating your mattress head to foot once a month for the first three months, then once every three months for the rest of its life. As for our super king Earth mattresses, twice a year after the first few months is enough, so your natural mattress fillings stay comfortable for longer. 

    Simba mattresses feature a machine washable cover you can zip off and wash, but it’s also a good idea to get one of our quilted cotton Super King Size Mattress Protectors to help protect your mattress from accidental spillages and general wear and tear. 

  • How long will my Simba super king mattress last for?

    We’re confident all our Simba mattresses will go the distance, which is why we offer a 10-year guarantee on all new mattresses. Manufacturing faults are rare, but if you stumble across any, just let us know and we’ll replace it with a brand new one.

  • Looking for a firm super king mattress?

    There’s no universal industry system that scores one so-called ‘firm mattress’ against another. But we believe a medium-firm super king mattress is most likely to offer the comfort our customers are looking for, so we’ve created our Hybrid® mattresses accordingly. They’re designed to offer supportive body alignment alongside soothing pressure relief.

Which Simba mattress is best for you?

Here's an introductory guide to our range. If you're not sure which mattress to go for; we have two different ones: the Hybrid® Range and the Earth range. We also have our own range of Simba certified Refurbished Mattresses, subject to availability.

  • Hybrid® Mattresses

    Award-winning mattresses, packed with ground-breaking tech for superb comfort and support. However you sleep, whatever your budget.

  • Earth Mattresses

    Heavenly comfort, sumptuous support. Designed and made in the UK with a luxurious blend of natural materials and our signature technical expertise.

Happy Sleepers

We rest better when we know your honest opinion of us. Check out reviews from Simba sleepers below.

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