Firmness
Medium Firm
Type
Hybrid
Depth (cm)
34
Number of Layers
Trial Period (nights)
Warranty (years)
Price Range
£1,749 to £2,999
Best Sleeping Position(s)
Certifications
Features CertiPUR® certified foams, ensuring no harmful chemicals.
Assessed from Simba's published specification for this mattress, captured September 2026, and from regular price comparison across our UK retail partners.
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, £1,749.00 as a starting price is a lot, but you're buying the flagship, and it's stocked by three retailers, so you can shop around. The medium firm feel keeps it in comfortable territory for back and combination sleepers.
Key Features & what's inside
- 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.
Who's it NOT for?
It's a big spend, so if your budget sits under £1,749.00 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.
Simba Hybrid Ultra Mattress
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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?
Prices range from £1,749.00 for a UK Single up to £2,999, depending on size. It's available in UK Single, Double, King and Super King, and it's stocked by three retailers, so comparing prices before you buy is sensible.
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.
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