Simba Natural Hybrid Source Mattress Review
Simba's entry into natural materials, using British wool and up to 2,900 springs. It costs the same as the Hybrid Pro, which gives you more spring.
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Verdict
Simba's entry into natural materials, using British wool and up to 2,900 springs at 28 centimetres. The natural story is genuine rather than decorative, and it costs the same as the Hybrid Pro, which gives you more spring. Which you choose depends on whether the materials matter to you as much as the count.
Buy it if
You want natural fillings and British wool from a brand with shops and a functioning returns operation.
Avoid it if
You are optimising construction per pound. The Hybrid Pro costs the same with more spring and a barrel spring base.
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| Specification | Detail |
|---|---|
| Type | Hybrid with natural fillings |
| Depth | 28cm |
| Layers | 8 |
| Springs | Up to 2,900 |
| Key material | British wool |
| Firmness | Medium firm |
| Price from | £899 |
| Same price as | Simba Hybrid Pro, with up to 4,800 springs |
The scores
A good mattress with a genuine materials story, priced against a stablemate that beats it on paper.
The same 899 pounds as the Hybrid Pro, which has more spring and a barrel spring base.
Up to 2,900 springs at 28cm is a proper support structure.
Wool regulates moisture across seasons in a way synthetic fills cannot.
Reasonable for the construction.
Pocketed springs at this density damp movement well.
200 nights and 10 years, with Simba's returns operation behind it.
Why wool is worth paying for, and it usually is not marketing
Wool is the one natural fill I would pay extra for, and the reason is moisture rather than temperature.
Wool fibres absorb moisture vapour into their structure without feeling wet, then release it as conditions change. That means a wool layer buffers the humidity immediately around you rather than just the temperature. In practice it is why wool bedding feels comfortable across a wider range of room temperatures than synthetics: it is managing the thing that actually makes you feel clammy.
It is also naturally flame resistant, which reduces the chemical fire retardant treatment needed to meet UK regulations. Nobody markets that and it is a genuine benefit.
British wool specifically is a supply chain claim rather than a performance one. It is good for traceability and for UK farming. It does not make the wool work better.
Against the Hybrid Pro at the same price
Simba prices these identically, which forces a genuine choice rather than a tiering.
The Hybrid Pro gives you up to 4,800 springs including a SupportCore base with up to 1,000 tempered steel barrel springs. The Natural Source gives you up to 2,900 springs and a natural materials build with British wool.
On construction the Pro wins. On materials and environmental profile the Source wins. If you are heavier or want maximum support, take the Pro. If natural fillings matter to you and you are of average build, the Source is a legitimate choice rather than a consolation.
A correction worth making
Commonly repeated, and wrong
Natural and organic are used interchangeably across mattress marketing and they are not the same claim. Natural means the fibre came from a plant or an animal. Organic refers to a certified growing or farming standard and requires certification to substantiate. A mattress with natural fillings may contain no certified organic material at all, and most do not. Look for the certification body rather than the adjective.
Should you buy it?
Yes if the materials matter to you. Wool genuinely earns its place and the construction is sound at up to 2,900 springs and 28 centimetres.
If you would take more spring over natural fill at the same money, the Hybrid Pro is the better mattress on paper.
Questions people ask
Is a wool mattress worth the extra?
Wool is the one natural fill I would pay extra for, and the reason is moisture rather than temperature. Wool absorbs moisture vapour without feeling wet and releases it as conditions change, buffering the humidity around you. It is also naturally flame resistant.
Simba Natural Hybrid Source or Hybrid Pro?
They cost the same, which forces a real choice. The Pro gives up to 4,800 springs including a barrel spring core. The Source gives up to 2,900 springs and natural fillings. On construction the Pro wins; on materials the Source does.
Is natural the same as organic?
No. Natural means the fibre came from a plant or animal. Organic refers to a certified growing standard and requires certification. A mattress with natural fillings may contain no certified organic material at all, and most do not.