Simba Hybrid Ultra Mattress
Mattress
Simba Hybrid Ultra Mattress
Size
Firmness
Medium Firm
Construction
Depth (cm)
34
Layers
Layer Details
- Construction. Simba describes the Hybrid Ultra as eleven layers of natural materials paired with its most advanced signature tech. The brand doesn't break down each layer individually on its page, but the overall build comes to a substantial 34cm depth.
Layer details from simbasleep.com product page, September 2026.
- 90cm each, every night: Two people sharing get 90cm each, which means you can both stretch out without negotiating territory in the small hours.
- Distance beats any comfort layer: The 34cm hybrid build absorbs movement well, but at this width a fidgeting partner is simply too far away to wake you.
- Room for the whole household: If children or a large dog treat your bed as theirs, the extra 30cm over a UK king keeps the adults from being edged out.
- Fills a large master properly: In a period property or a big new build main bedroom, a UK king can look undersized; this footprint suits the space.
- Medium firm across a wide surface: The medium firm feel suits back and combination sleepers, and at this width each of you gets a full stretch of it.
This size suits you if...
You share the bed every night and want the maximum standard UK size, your partner is genuinely restless and you've decided distance matters more than any motion-absorbing layer, or children and pets regularly join you and everyone still needs a fair share. It also fits if you have a large master bedroom where a smaller bed would look lost.
Consider another size if...
Your bedroom is smaller than our suggested minimum of 3m x 2.9m, or you sleep alone and the width would go unused. In either case we'd recommend the UK king instead, which is 30cm narrower and easier to place.
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Is the Simba Hybrid Ultra super king good for couples?
It's arguably the best size in the range for couples. Two people get 90cm each, and the deep 34cm hybrid build cushions pressure and dampens movement, so between the width and the construction, a partner's tossing rarely reaches you. Lightweight side sleepers should note the medium firm feel may run slightly firm for them.
How much space do two people get on the Simba Hybrid Ultra super king?
90cm each for two people sharing, across a total width of 180cm. That's a generous personal zone by any standard, and it leaves genuine room to spare when a child climbs in overnight or a dog settles at the foot of the bed as routine.
Is the Simba Hybrid Ultra super king worth it over the UK king?
The UK super king is 30cm wider than the UK king, and this is Simba's most expensive model, so the size jump adds cost. If a restless partner disturbs you, or children and pets share regularly, that extra width does more for your sleep than any layer can. Solo sleepers gain little from it.
Can I rotate the Simba Hybrid Ultra super king on my own?
Realistically, no. This is a 34cm deep hybrid in the largest standard UK size, and the model is heavy to handle even in smaller sizes. Plan on two people for rotating it, and check door swings and landing turns before delivery, since problems that a UK double sails past can bite at 180 x 200cm.
What room do I need for this mattress in a super king?
We suggest at least 3m x 2.9m, with around 3.5m x 3.2m feeling comfortable once you add bedside tables on both sides. In a loft conversion, the sloping ceiling usually decides which wall takes the bed, so measure head height along your preferred wall before committing to a footprint this large.