Simba Hybrid Pro Core Mattress
The Simba Hybrid Pro Core Mattress combines a Stratos cool-touch cover and British wool with Aerocoil microsprings, which means you get a breathable surface and targeted support at your hips and shoulders.
- Cool-touch cover keeps you fresher
- Targeted support at hips & shoulders
- 200-night trial & 10-year guarantee
£749
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The Simba Hybrid Pro Core is a medium-firm hybrid, 28cm deep, with a washable cooling cover, British wool, foam layers and two sets of springs. It suits sleepers who want a supportive, breathable feel with some cushioning on top. It comes in a UK single, UK small double, UK double, UK king and UK super king, with a 200-night trial and 10-year guarantee from Simba.
Mattress specifications
Firmness
Medium Firm
Type
Hybrid
Depth (cm)
28
Number of Layers
8
Trial Period (nights)
200
Warranty (years)
10
Price Range
£749 to £1,349
Best Sleeping Position(s)
Back Sleeping
Combination Sleeping
Stomach Sleeping
Certifications
CertiPUR
Assessed from Simba's published specification for this mattress, captured November 2026, and from regular price comparison across our UK retail partners.
Why should you choose this mattress?
The surface is built to stay fresh: a cool-touch Stratos cover sits over British wool, and Simba says both are there to improve breathability. Beneath, Aerocoil microsprings respond independently, so areas like your hips and shoulders get targeted support. The SupportCore base uses pocketed steel springs for firm edge-to-edge support with no roll-off, which helps if you sit on the edge or share the bed. The cover zips off and is machine washable. It should suit most back and side sleepers, although you'll need a protector to keep the guarantee valid.
Key features & layer details
Soft, cooling cover
A zip-off, washable cover with Stratos tech that prevents heat build-up. It keeps the surface cooler and is easy to keep clean.
Natural wool layer
A soft layer of British wool that Simba says enhances breathability and comfort. It helps the surface feel fresh and cushioned.
Fresh Simbatex foam
Foam designed to enhance airflow, with elasticity for cushioning. You get some give on top without trapping heat.
High-elasticity CertiPUR foam layer
A CertiPUR foam layer engineered for elasticity. It adds a cushioned feel and springs back as you move.
Titanium alloy Aerocoil springs
Patented microsprings designed to support parts of the body with specific needs, such as hips and shoulders. They respond independently, so support is targeted where you need it.
Stabilising core foam layer
A CertiPUR foam layer that provides structural support and extra airflow. It steadies the layers above and helps air move through the mattress.
SupportCore sprung base
Up to 1,000 pocketed, tempered steel barrel springs for firm edge-to-edge support with no roll-off. You can sit or sleep near the edge and still feel supported.
High-density foam base
A CertiPUR foam base that works with the SupportCore springs to deliver stability and support. It gives the whole mattress a steady foundation.
Layer details from simbasleep.com product page, November 2026.
Best suited for?
Back sleepers
The medium-firm feel and pocketed steel spring base give steady, supportive lift, so your body stays level rather than sinking in too deeply.
Side sleepers
Aerocoil microsprings respond independently, which means your hips and shoulders get targeted support while the foam layers above add some cushioning.
Warm sleepers
A cool-touch Stratos cover, British wool and airflow-focused foam layers work together to improve breathability, so the surface feels fresher and less likely to trap heat.
Couples
The SupportCore base uses pocketed steel springs for firm edge-to-edge support with no roll-off, so both of you can sleep or sit near the edge.
Allergy sufferers
The cover zips off and is machine washable, which makes it easy to keep the sleeping surface clean and fresh.
If you prefer sleeping on a very soft mattress, this might not be the best choice. It's rated medium-firm, so you'll feel more support than sink. Anyone who wants a deep, hugging feel may find it too structured. Simba also says the 10-year guarantee needs a protector, which is an extra purchase to plan for.
Save on an earlier or ex-display model
Some retailers still sell the earlier version of this mattress, or ex-display and returned stock at a lower price. These are the sizes where it costs less than the current model's best price.
Simba Hybrid Pro Core Mattress
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FAQ's
How firm is the Simba Hybrid Pro Core?
Simba rates it medium-firm, with no other firmness options. That suits back and side sleepers who want support with some cushioning, although anyone wanting a soft, sinking feel may find it too firm.
What sizes does the Simba Hybrid Pro Core come in?
It comes in a UK single, UK small double, UK double, UK king and UK super king. Simba doesn't list a UK small single for this mattress, so check your bed frame before choosing.
How deep is the Simba Hybrid Pro Core?
It is 28cm deep. That's enough for its eight layers of wool, foam and springs, but check that your bed frame and any fitted sheets suit that depth.
Is the Simba Hybrid Pro Core good for hot sleepers?
It's designed with heat in mind. The Stratos cool-touch cover and British wool layer are both there to improve breathability, and the foam layers are designed for airflow. It should suit warm sleepers, though how cool you feel varies from person to person.
Does the Simba Hybrid Pro Core come with a trial and guarantee?
Yes. Simba offers a 200-night trial and a 10-year guarantee. The brand says the guarantee needs a mattress protector to stay valid, so factor that in when you buy.
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