SleepSoul Nimbus Mattress
The SleepSoul Nimbus is an all-foam mattress with a medium feel, with a thin layer of memory foam over a deeper foam base.
- Slim profile for bunk & cabin beds
- Medium feel suits most positions
- 10-year guarantee
£129
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At 10.5cm deep, the SleepSoul Nimbus is noticeably slimmer than a standard mattress, so it suits guest rooms, bunk beds or tighter budgets rather than everyday use for heavier adults. SleepSoul backs it with a 10-year guarantee, which is reassuring at an affordable starting price. Available in UK Single and UK Double.
Mattress specifications
Firmness
Medium
Type
Memory Foam
Depth (cm)
11
Number of Layers
3
Trial Period (nights)
Warranty (years)
10
Price Range
£129 to £165
Best Sleeping Position(s)
Side Sleeping
Back Sleeping
Combination Sleeping
Certifications
Assessed from SleepSoul'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?
The main draw here is price. The Nimbus is one of the cheaper routes to a memory foam feel, and the 10-year guarantee from SleepSoul adds a layer of confidence you might not expect at this level. The medium feel should suit most sleeping positions, although the shallow 10.5cm profile means it works best where a slim mattress is actually an advantage: bunk beds, cabin beds or an occasional guest bed. It arrives vacuum-packed in a box, and SleepSoul asks that you give it 48 hours to return to its original size before sleeping on it. It is a simple design, but at an affordable starting price, simplicity is fair.
Key features & layer details
Luxurious comfort quilting
A quilted top layer that adds a soft, cushioned surface where your body first meets the mattress. It gives the sleeping surface a slightly plumper feel than a plain cover would.
Memory Foam
A 1cm layer of memory foam that acts as a transition layer, designed for what SleepSoul calls the perfect sink with minimised movement. Being thin, it offers a gentle hint of contouring rather than the deep hug of thicker memory foam mattresses.
Foam
A 10cm foam base that provides deep comfort through consistent weight distribution. This layer does most of the supportive work, spreading your weight evenly across the mattress.
Layer details from sleepsoul.co.uk product page, September 2026.
Best suited for?
Guest rooms
The slim profile and simple three-layer build suit an occasional guest bed, where a slim mattress is an advantage over everyday comfort.
Bunk beds
At 10.5cm deep, it sits low enough to work well in bunk beds, where a thicker mattress could leave too little clearance.
Budget buyers
The copy calls it one of the cheaper routes to a memory foam feel, backed by a 10-year guarantee from SleepSoul.
Lighter sleepers
The medium feel and thin 1cm memory foam layer give a gentle hint of contouring, which suits lighter bodies not needing a deep sink.
At 10.5cm deep, this is a slim mattress, so heavier adults or anyone wanting a plush, deep-sinking feel should look elsewhere. If you love pronounced memory foam contouring, the 1cm layer here will feel too subtle. It is best treated as a guest, bunk or budget option rather than a long-term main mattress.
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.
SleepSoul Nimbus Mattress
Last seen for £151.05 at Mattress Man on 25th June 2026
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FAQ's
How deep is the SleepSoul Nimbus mattress?
The Nimbus is 10.5cm deep, which is slimmer than most standard mattresses. That makes it a good fit for bunk beds, cabin beds and guest rooms, where a lower profile is often safer and more practical, but a less obvious choice as an everyday mattress for adults.
Is the SleepSoul Nimbus firm or soft?
SleepSoul describes the Nimbus as having a medium feel. The quilted cover and thin memory foam layer give a little softness at the surface, while the 10cm foam base underneath keeps things supportive rather than sinky.
Does the SleepSoul Nimbus come with a guarantee?
Yes, SleepSoul lists a 10-year guarantee for the Nimbus, which is generous for a mattress with an affordable starting price.
How is the SleepSoul Nimbus delivered?
It arrives vacuum-packed and boxed, which makes it easier to carry upstairs and into smaller rooms. SleepSoul advises allowing 48 hours for it to return to its original size before you sleep on it.
What sizes does the SleepSoul Nimbus come in?
The Nimbus is available in UK Single and UK Double. There is no small double, king or super king option, so couples wanting more space will need to consider a different model.
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