Simba Hybrid Ultra Mattress
The Simba Hybrid Ultra sits at the top of Simba's range, a 34cm deep hybrid built from eleven layers combining natural materials with Simba's own technology.
- Deep build cushions pressure points
- Eleven layers of natural materials
- Suits back & combination sleepers
£1,171.83
Get the lowest price we've found
The Simba Hybrid Ultra sits at the top of Simba's range, and the price reflects that. It's a hybrid built from eleven layers combining natural materials with Simba's own signature tech, which means you get the springy responsiveness of a hybrid with a noticeably deep, 34cm build. Retailers list it as medium firm, a level that suits most sleepers, although very lightweight side sleepers may find it slightly firmer than they'd like. It comes in four UK sizes, from Single up to Super King.
Mattress specifications
Firmness
Medium Firm
Type
Hybrid
Depth (cm)
34
Number of Layers
Trial Period (nights)
Warranty (years)
Price Range
£1,171 to £2,009
Best Sleeping Position(s)
Back Sleeping
Stomach Sleeping
Combination Sleeping
Certifications
Assessed from Simba's published specification for this mattress, captured September 2026, and from regular price comparison across our UK retail partners.
Why should you choose this mattress?
If you want a deep, substantial mattress and you're prepared to pay for it, the Hybrid Ultra makes a strong case. At 34cm it's a genuinely thick build, which means more material working to cushion pressure points and absorb movement than a slimmer mattress can manage. Simba describes eleven layers of natural materials and its most advanced signature tech, so this is the brand going all in rather than trimming costs. Yes, the starting price is a lot, but you're buying the flagship. The medium firm feel keeps it in comfortable territory for back and combination sleepers.
Key features & 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.
Best suited for?
Back sleepers
The medium firm feel keeps the surface supportive and comfortable, which suits the way back sleepers sit on top of a mattress.
Combination sleepers
Hybrid springiness and a medium firm feel make changing position easy, so people who move through the night shouldn't feel stuck in the surface.
Couples
At 34cm deep, there is more material to absorb movement, which means one partner shifting about is less likely to disturb the other.
Eco-conscious buyers
Eleven layers of natural materials make up the build, so those wanting a mattress with natural content have plenty to look at here.
It's a big spend, so if your budget sits under the starting price you'll need to look elsewhere in Simba's range. The 34cm depth can also be a practical snag: deep fitted sheets are a must, and it's a heavy mattress to rotate. Lightweight side sleepers may find medium firm a touch too solid.
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 Ultra Mattress
Select a comparison article below or choose to compare this mattress side by side with up to 2 other mattresses.
Did you know? On Mattress Unboxed we have over 1,000 different mattresses to suit all types of sleepers. View all mattresses.
FAQ's
How firm is the Simba Hybrid Ultra?
Retailer listings describe it as medium firm. That's a middle-of-the-road feel with a slight lean towards support, which tends to suit back sleepers and heavier side sleepers well. Simba's own product page doesn't state a firmness rating, so the medium firm label comes from retailer specifications.
How deep is the Simba Hybrid Ultra mattress?
It's 34cm deep, which is a genuinely thick build. You'll want deep or extra-deep fitted sheets, and it's worth checking your bed frame can accommodate the extra height comfortably.
How much does the Simba Hybrid Ultra cost?
It depends on the size you choose, and the price table on this page shows the current price for each size. It's available in UK Single, Double, King and Super King.
Does the Simba Hybrid Ultra come with a guarantee?
Retailer listings show a 10 year guarantee. Simba's own product page doesn't state guarantee terms, so check the exact cover with the retailer you buy from before ordering.
Couldn't find an answer to your question? Send us a message