Simba Hybrid Super King Mattress
The Simba Hybrid is a 25cm hybrid that pairs up to 1,900 Aerocoil® conical microsprings with graphite-infused Simbatex® foam, which means springy, responsive support with the graphite there to draw heat away as you sleep.
- Minimises partner disturbance
- Graphite foam keeps you cooler
- 200-night trial & 10-year guarantee
£824
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Simba Hybrid Mattress
More available sizes
Mattress details
Mattress
Simba Hybrid Mattress
Size
Firmness
Medium Firm
Construction
Foam
Pocket Spring
Hybrid
Rolled
Depth (cm)
25
Layers
5
Layer Details
Breathable knitted cover
A soft knitted cover with a zip off top layer you can machine wash.
Simbatex comfort layer
An extra deep, open structure foam infused with graphite, designed to cushion while moving heat away from the body.
Aerocoil microspring layer
Up to 1,900 conical titanium alloy microsprings, made in Leeds, that compress individually, which means support that follows your body and less movement felt across the bed.
Stabilising core foam
A thick, open structure CertiPUR certified foam layer that aids structural support and airflow.
Nine zoned support base
A zoned CertiPUR foam base giving firmer support where heavier areas like hips and shoulders need it.
Specification: Simba, September 2026.
Key benefits
- 90cm of width each: Two people sharing get 90cm each, which means a restless partner can turn all night without ever crossing into your half.
- Distance plus microsprings: The Aerocoil microsprings compress individually, and at this width their motion isolation works alongside sheer distance, so movement rarely reaches you at all.
- Room for night-time visitors: At 6ft x 6ft 6in there is genuine space for a child who appears at 3am, without anyone ending up clinging to the edge.
- Cooling across a bigger surface: The graphite infused Simbatex layer draws heat away, and with more mattress between you, shared body heat is less of an issue anyway.
- Fills a large master properly: In a big bedroom where a UK king can look undersized, the UK super king sits in proportion with the room.
This size suits you if...
You share the bed every night and want the most sleeping space a standard UK size offers, your children or pets treat your bed as their own and you'd rather plan for that than fight it, or your master bedroom is large enough that a UK king would look a little lost against the wall.
Consider another size if...
Your bedroom is smaller than the 3m x 2.9m we suggest as a minimum, or you'd struggle to get a 180cm wide mattress round your landing. The UK king is 30cm narrower and still generous for two; we'd recommend it instead.
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FAQ's
Should I get the Simba Hybrid in a UK king or a UK super king?
It comes down to your room and who shares the bed. The UK king is 30cm narrower than the UK super king, which is fine for two adults alone. If children or pets join you regularly, or your room comfortably exceeds our suggested 3m x 2.9m minimum, the UK super king is the better fit.
Will the Simba Hybrid super king stop me feeling my partner move?
It gives you the best chance of any size. The microsprings compress individually, so movement stays localised, and with 90cm each for two people sharing, there is simply more mattress between you. A genuinely restless partner is far easier to ignore at this width than on a UK double or UK king.
Is the Simba Hybrid super king big enough for a couple with a child who wanders in?
For occasional visits, yes. At 180 x 200cm there is room for a small child between two adults without anyone hanging off the edge, and the zoned base keeps support consistent across the width. If a child sleeps with you most nights, no mattress feels roomy, but this size copes better than any other.
What size room does the Simba Hybrid super king need?
We suggest at least 3m x 2.9m as a working minimum, with around 3.5m x 3.2m feeling right if you want bedside tables on both sides and space to move around the bed. In a large period master or a generous new build main bedroom, it sits in proportion rather than dominating.
Is the Simba Hybrid super king worth it if a dog shares the bed?
It is the size we'd point dog owners towards. A large dog on a UK king eats into space two adults already need, while the UK super king absorbs the intrusion. The washable zip off cover is a practical bonus here too. Do budget for super king bedding, which costs more and comes from fewer shops.