THE BEST OF EVERYTHING

Hybrid® Ultra Mattress

Our dream mattress. A luxurious cocooning fusion. Eleven layers of remarkable natural materials and most advanced signature tech.

7,300 Springs

34cm Depth

11 Layers

FusionCool™
freshness

Pure Lift

7,300 Springs

34cm Depth

11 Layers

FusionCool™
freshness

Pure Lift

Soft
Medium soft
Medium firm
Firm

Hybrid® Ultra Highlights

Luxury, visionary design.

More of our signature tech than ever before, combined with high-performance natural materials.

Optimum support.

Our highest ever spring count

offers more personalised contouring and supports pressure relief.

Enhanced elasticity.

A double layer of Simbatex® foam. For more luxurious cushioning and comfort.

Innovative FusionCool™.

Our own blend of kapok, wool & bamboo for an extra fresh top layer.

Boosting PureLift®.

A unique blend of latex & coconut for superb support & breathability.

Knitted, breathable top cover

with 'cool-touch' Stratos® tech zips off for easy washing or replacing

Made in the UK.

In specialist mattress factories.

Simba recycling available.

Suitable for recycling via our collection service or specialist providers.

Includes complimentary Hybrid Pillows Hybrid Duvet and Mattress Protector worth up to £646.

Hybrid® Ultra Highlights

Luxury, visionary design. More of our signature tech than ever before, combined with high-performance natural materials.
Optimum support. Our highest ever spring count

Based on a King size mattress spring count offers more personalised contouring and supports pressure relief.
Enhanced elasticity. A double layer of Simbatex® foam. For more luxurious cushioning and comfort.
Innovative FusionCool™. Our own blend of kapok, wool & bamboo for an extra fresh top layer.

Boosting PureLift™. A unique blend of latex & coconut for superb support & breathability.
Knitted, breathable top cover with 'cool-touch' Stratos® tech zips off for easy washing or replacing
Made in the UK. In specialist mattress factories.
Simba recycling available. Suitable for recycling via our collection service or specialist providers.
Includes complimentary Hybrid Pillows Hybrid Duvet and Mattress Protector worth up to £646.

Hybrid® Ultra: Tech Spotlight

FusionCool™ top layer

Stay Fresh. Stay Dry.

Our tech team were laser-focussed on creating the most comfortable top layer for the Ultra. In lab tests, a combination of breathable wool, airy bamboo and charcoal was the best performer. But there was something missing.

Meet silky-soft kapok. Found in the rainforests of Southeast Asia, kapok is one of the lightest plant fibres on earth, with an air content of 80% and a fine wax coating that makes it moisture resistant. The high air content makes it breathable, resulting in enhanced airflow and fresher sleep.

FusionCool® top layer

Stay Fresh. Stay Dry.

Our tech team were laser-focussed on creating the most comfortable top layer for the Ultra. In lab tests, a combination of breathable wool, airy bamboo and charcoal was the best performer. But there was something missing.

Meet silky-soft kapok. Found in the rainforests of Southeast Asia, kapok is one of the lightest plant fibres on earth, with an air content of 80% and a fine wax coating that makes it moisture resistant. The high air content makes it breathable, resulting in enhanced airflow and fresher sleep.

More air. More fresh.

Simbatex® foam technology

Two
layers
Optimum
freshness
Flexible
cushioning

We know being too hot stops us sleeping well. That’s why our tech team created cushioning Simbatex® foam in the first place. But the Ultra is the only Simba mattress to have a revolutionary, double layer of it.

Simbatex is an structure foam, which is less dense and offers much better, springier elasticity and more airflow; it’s also infused with graphite, known to dissipate heat for a fresher night's sleep.

Your sleep, boosted.

Purelift™ flexible support

Being inventive isn’t always about creating new materials; sometimes it’s about finding fresh ways to use traditional ones. Which is exactly what our tech team did with latex and, coconut.

PureLift™ is the fusion of elastic latex and breathable coconut fibres, famous for their properties of resistance and bounce. In product testing, this unique blend created an incredible spring-like layer with superb airflow and pressure distribution, designed to adapt to your body shape to provide exceptional and complete support.

Our highest spring count ever

Best Aerocoil® spring comfort

x4 layers
Best in range
contouring
Designed to
limit motion
transfer
Optimum
freshness

Our technologists insisted on 7,300 springs in the Ultra, more than any other Simba mattress. They said it was the path to perfection, and we couldn’t argue with that.

3,800 titanium alloy Aerocoil® micro springs sit in the upper layers. You won’t be able to feel them, but they compress individually in response to your body, supporting pressure relief and helping to limit the transfer of movement.

2,500 high carbon steel Aerocoil® micro springs sit further down the mattress to maximise support, gently pushing fresh air through the mattress as they compress.

The Hybrid® Ultra also features our SupportCore™ base, with 1,000 pocketed barrel springs to ensure edge-to-edge support.

More air. More fresh.

Simbatex® foam technology

Two
layers
Optimum
freshness
Flexible
cushioning

We know being too hot stops us sleeping well. That’s why our tech team created cushioning Simbatex® foam in the first place. But the Ultra is the only Simba mattress to have a revolutionary, double layer of it.

Simbatex is an structure foam, which is less dense and offers much better, springier elasticity and more airflow; it’s also infused with graphite, known to dissipate heat for a fresher night's sleep.

Your sleep, boosted.

Purelift™ flexible support

Being inventive isn’t always about creating new materials; sometimes it’s about finding fresh ways to use traditional ones. Which is exactly what our tech team did with latex and, coconut.

PureLift™ is the fusion of elastic latex and breathable coconut fibres, famous for their properties of resistance and bounce. In product testing, this unique blend created an incredible spring-like layer with superb airflow and pressure distribution, designed to adapt to your body shape to provide exceptional and complete support.

Our highest spring count ever

Best Aerocoil® spring comfort

x4 layers
Best in range
contouring
Designed to
limit motion
transfer
Optimum
freshness

Our technologists insisted on 7,300 springs in the Ultra, more than any other Simba mattress. They said it was the path to perfection, and we couldn’t argue with that.

3,800 titanium alloy Aerocoil® micro springs sit in the upper layers. You won’t be able to feel them, but they compress individually in response to your body, supporting pressure relief and helping to limit the transfer of movement.

2,500 high carbon steel Aerocoil® micro springs sit further down the mattress to maximise support, gently pushing fresh air through the mattress as they compress.

The Hybrid® Ultra also features our SupportCore™ base, with 1,000 pocketed barrel springs to ensure edge-to-edge support.

Hybrid® range features

What’s special about a Simba?

•••••••

A unique Hybrid® design.

The tailored support you only get from our patented springs. The fresh cushioning you only get from our innovative foam. (And the more you have, the better).

Why Simba suits everyone

All shapes, sizes & sleep positions

Simba is the most five-star rated mattress brand in the world. Because our unique Hybrid® mattress technology is designed to feel perfectly comfortable to everyone, no matter their shape or sleeping style.

It’s about offering improved pressure relief and full body alignment; Simba’s signature tech is designed to create a ‘hugged’, cradled feeling in the upper layers, and more support in the base layers, with adjustment for hips and shoulders.

P.S. We rate our Hybrid® mattresses as ‘medium-firm’. There’s no universal firmness rating system in the industry, so we’ve aimed to align our designs with independent studies which show this is ideal for sleep quality and comfort.

too soft

Lacks support

Simba

For full body alignment

TOO FIRM

Lacks cushioning

The Hybrid® Ultra: Layer by Layer

Working together for maximum comfort

Soft, breathable cover

The soft, knitted sleep surface zips off for washing and helps you stay fresh thanks to 'cool-touch' Stratos® tech.

Dimensions
- 90X190 UK SINGLE MATTRESS
- 135X190 DOUBLE MATTRESS
- 150X200 UK KING MATTRESS
- 180x200 UK SUPER KING MATTRESS
Mattress Technology

The Simba Hybrid® Ultra Mattress is 34cm deep and includes 8 carry handles (Single size has 4). We’ve used responsibly sourced materials where possible, and specialist removal and recycling is available via our trusted third partner.
- Layers 1
  
  530g knitted polyester top cover (due to updated covers fabric spec may vary slightly between 02/24 and 11/24) with zip-off, washable sleep surface and Stratos® technology.
  
  133g knitted polyester internal cover to protect mattress layers when top cover is removed for washing
- Layer 2.
  
  (250gms) Wool (80%), charcoal-infused bamboo (10%), & kapok fibres (10%).
- Layers 3 & 4.
  
  CertiPUR™ certified Simbatex® foam (graphite infused).
- Layer 5.
  
  Latex and coconut fibre blend.
- Layers 6 & 7.
  
  CertiPUR® foam border, conical Aerocoil™ pocket springs, manufactured in Leeds from titanium alloy and high-carbon steel, enclosed in a polypropylene pocket.
- Layer 8.
  
  CertiPUR® foam.
- Layer 9.
  
  CertiPUR® foam border; up to 2,500 Aerocoil® springs manufactured in Leeds from high-carbon steel, enclosed in a polypropylene pocket. (high carbon steel)
- Layer 10.
  
  Up to 1000 barrel springs made from high carbon steel
- Layer 11.
  
  CertiPUR® foam base
  
  4 handles for ease of movement (excluding Super King Size).
  8 handles for ease of movement (Super King Size only).
Rotate your mattress once a month for the first three months, then every three months or seasonally thereafter.

Top cover: the top section of the outer cover can be zipped off and washed at 40°C on a reduced spin cycle, then line dried (If it can’t be washed/dried/replaced in the same day, the inner fabric cover is suitable to sleep on.)
- Do not use bleach
- Do not tumble dry
- Do not iron
- Do not dry clean
Base cover: the grey base fabric can be cleaned with a soft, damp, clean cloth using small circular motions.

Award winning tech

See all awards

Menopause Friendly

Our products that carry the GenM Menopause Friendly symbol can ease, relieve or support one or more of the 48 symptoms of menopause.

SUSTAINABILITY

A force for good.

•••••

The UK’s first B-Corp sleep brand.

Simba believe success isn’t just about profit. It’s also about having a positive impact, socially and environmentally.

For us, being a globally certified B Corp means we’re achieving that. For our customers, it means not just having to take our word for it.

350,000+ five-star reviews* (and counting)

Read Reviews

Ridiculously comfy

Everything's been great. The delivery, our mattress, our sleep!!! It's ridiculously comfy. Thankyou!

Abigail W
Hybrid® Ultra Mattress

So far so good!

We have immediately felt the difference with the Hybrid Ultra. Fantastically comfortable and loads of support.

Darryl P
Hybrid® Ultra Mattress

Two peas in a Simba pod

We love our new Hybrid® Ultra Mattress and have both been sleeping like babies for the past couple of weeks. It's comfortable, supportive, but not too hard or too soft. Highly recommended.

Erik L
Hybrid® Ultra Mattress

We strive to deliver the best possible products and services. Reviews attributed to a model of a product or to services reflect reviews left for previously offered design iterations of a model of product or a service, as well as the optimized and improved iteration of the product or service offered today. *Please visit: simbasleep.com/pages/reviews for more information.