Simba Hybrid Kids Mattress Review
A genuinely well thought out children's mattress, which is rarer than it should be. What makes it worth the money is that it is built for a body that is still changing.
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Verdict
A genuinely well thought out children's mattress, which is rarer than it should be. Sixteen centimetres with up to 1,000 Aerocoil springs, sized for a UK single. The thing that makes it worth the money is not the springs, it is that Simba has built it for a body that is still changing shape.
Buy it if
You want a properly engineered children's mattress rather than a cheap foam slab, and you will keep it for several years.
Avoid it if
The child is about to outgrow a single bed, or your budget is better spent on a full-size mattress they will keep longer.
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| Specification | Detail |
|---|---|
| Type | Hybrid with Aerocoil micro-springs |
| Depth | 16cm |
| Layers | 5 |
| Springs | Up to 1,000 Aerocoil micro-springs |
| Size | UK single |
| Price from | £399 |
| Cover | Zip-off, washable |
The scores
Properly engineered for a category that is usually an afterthought.
Four hundred pounds is a lot for a single. It is also a mattress that will last the child years.
Sixteen centimetres is correct for a light body. Deeper would be worse, not better.
Micro-springs and a shallow build. Children run hot and this handles it.
Reasonable, and edge support matters on a single where the child sleeps near the side.
Largely irrelevant on a single bed.
Simba's standard terms, which is more than most children's mattresses carry.
Why 16 centimetres is right, not cheap
The instinct when buying for a child is that a thinner mattress means a cheaper one. Here it is a design decision and it is the correct one.
A mattress supports you by compressing to a point and then pushing back. The amount of compression needed depends on body weight. A 25 kilogram child on a 28 centimetre adult mattress never compresses the comfort layers enough to reach the support structure, so they sleep on top of the mattress rather than in it, and the zoning and support engineering does nothing.
Sixteen centimetres with 1,000 micro-springs is calibrated to a light body. The child actually reaches the support layer, which is the entire point of having one.
This is the same reason adult firmness ratings do not transfer to children, and why buying a child a cheap adult mattress usually produces a worse night's sleep than buying them a well-designed smaller one.
The practical things that matter more than the specification
The zip-off washable cover is the feature I would prioritise on any children's mattress, ahead of spring count, depth or brand.
Children are sick, have accidents, and spill things. A stain voids most mattress guarantees, and on a children's mattress the probability of a stain is close to certain. A washable cover plus a waterproof protector is the difference between a mattress lasting eight years and being replaced in two.
Buy the protector on the same day. It is the cheapest insurance in bedding and on a child's bed it is close to mandatory.
A correction worth making
Commonly repeated, and wrong
Children's mattresses are routinely reviewed against adult criteria, with deeper builds and higher spring counts treated as better. A child weighing 25 to 40 kilograms does not compress an adult mattress enough to engage its support structure, so they sleep on the surface and the engineering underneath does nothing. A shallower mattress calibrated to a light body gives better support than a deeper one, and depth on a children's mattress is a design decision rather than a cost saving.
Should you buy it?
Yes if you want a properly designed children's mattress and will keep it for several years. Four hundred pounds is real money for a single, and it is engineered for the body sleeping on it rather than scaled down from an adult product.
Buy a waterproof protector at the same time. Nothing else you can spend twenty pounds on will do more for how long this mattress lasts.
Questions people ask
Is a thinner mattress worse for a child?
No, it is usually better. A 25 to 40 kilogram child never compresses a 28cm adult mattress enough to reach its support structure, so they sleep on the surface and the engineering underneath does nothing. Sixteen centimetres is calibrated to a light body.
What matters most in a children's mattress?
A zip-off washable cover, ahead of spring count, depth or brand. Children are sick, have accidents and spill things, and a stain voids most mattress guarantees. Buy a waterproof protector the same day: it is the difference between eight years and two.