Simba Hybrid Small Double 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
£674.25
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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
- Real space for one sleeper: That extra 30cm over the UK single means you can roll, stretch and change position freely, without the price or floor space of a full double.
- Fits rooms a double overwhelms: Being 15cm narrower than the UK double often keeps a walkway clear beside the bed, useful in box rooms, studios and loft conversions with sloping walls.
- Copes with occasional sharing: The Aerocoil microsprings compress individually, so on the weekends a couple does share, one person turning over is less likely to wake the other.
- Cool comfort in a compact room: Smaller bedrooms can run warm, and the graphite infused Simbatex layer draws heat away from your body rather than trapping it.
- Easy to buy for: The 4ft small double is a standard UK size, so frames, fitted sheets and a normal double duvet are all simple to find.
This size suits you if...
You sleep alone but have outgrown a single and want proper room to spread out, or your bedroom simply cannot take a 4ft 6in frame without losing the floor space you need to move around. It also makes sense for a guest room or holiday let where couples stay a few weekends a year rather than every night. Allow at least 2.4m x 2.8m of room space.
Consider another size if...
You share the bed every night, in which case 120cm across two adults feels tight over time. We'd recommend the UK double instead, or the UK king if your room allows it.
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FAQ's
Is a small double Simba Hybrid big enough for a couple?
For occasional nights, yes. The microspring layer keeps movement on each sleeper's side, which helps when two people share 120cm of width. For every night use, most couples find it snug, and the UK double or UK king would be a more comfortable long term choice.
What room size do I need for a small double Simba Hybrid?
We suggest allowing at least 2.4m x 2.8m. That leaves enough space to walk round the bed and open drawers or a wardrobe. If your room is smaller than that, a UK single may be the more liveable option, even though you lose 30cm of bed width.
How much bigger is the small double than a single?
The UK small double is 30cm wider than the UK single, at 120 x 190cm against 90 x 190cm. The length is identical. That extra width is what makes it appealing for a solo adult who has outgrown a single, a teenager included, without the footprint of a full double.
What bedding fits the Simba Hybrid small double?
You'll need small double (4ft) fitted sheets, and at 25cm deep the Simba Hybrid sits within the range most standard fitted sheets accommodate. A standard double duvet works well on top, with a little pleasing overhang on each side for a solo sleeper.
Where can I buy the Simba Hybrid in a small double?
As a standard UK size, the small double is stocked alongside the more common sizes. Compare the retailers listed on this page; the prices shown here are updated as retailers change them, so it's worth checking back if you're not buying today.