Available 
SleepSoul Space 3000 Pocket Memory Pillow Top Mattress
from £429-£505.
£429-£505
Sizes tracked: Double, King Size, Super King
SleepSoul Pocket Sprung
SleepSoul Space 4000 Pocket Orthopaedic Gel Mattress review
SleepSoul Space 4000 Pocket Orthopaedic Gel Mattress is a firm, support-led pocket sprung option with three sizes, a 100-night trial and a price that sits below the comparable median, though the owner-review sample is still limited.
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Last verified: 2026-07-21
Quick verdict
SleepSoul Space 4000 Pocket Orthopaedic Gel Mattress is easiest to recommend to shoppers who want firm support rather than a softer, sink-in feel. The tracked prices run from £454 to £534 across Double, King Size and Super King, and the 100-night comfort trial adds some reassurance if you are unsure about the feel. The caution is that the visible owner-review sample is limited, so the 4.7 rating is encouraging but not enough to treat as broad proof of satisfaction.
Available sizes and prices
SleepSoul Space 4000 Pocket Orthopaedic Gel Mattress is listed with 3 size options from £454-£534. The visible sizes include Double, King Size, Super King, so use the table to compare the option that matches the exact size, colour, format or specification you want. Always confirm the final checkout price, delivery charge and stock status on the retailer page.
Key product details
These are the retailer details worth checking first for SleepSoul Space 4000 Pocket Orthopaedic Gel Mattress: Brand: SleepSoul; Type: Pocket Sprung; Firmness: Firm; Sizes tracked: Double, King Size, Super King. Treat them as a quick fact sheet, then use the retailer page to verify any installation, warranty, delivery or model-number details before buying.
| Brand | SleepSoul |
|---|---|
| Type | Pocket Sprung |
| Firmness | Firm |
| Sizes tracked | Double, King Size, Super King |
| Price range | £454-£534 |
| Owner rating signal | 4.7 out of 5 shown; review volume needs checking with the retailer |
| Last checked | 2026-07-21 |
What Mattress Online shows
The retailer identifies this as a SleepSoul pocket sprung mattress with gel foam comfort layers and a firm firmness rating. The page also mentions a 100-night comfort trial, a 10-year warranty, free delivery to most locations and old mattress removal service. One detail worth checking before ordering is mattress depth, because that can affect bed-frame fit, bedding choice and topper compatibility.
What the comparison context suggests
Against 186 comparable pocket sprung mattresses, this model sits below the comparable median price of £612, so it is not positioned as a premium-priced buy. It also has 3 tracked variants versus a median of 4, which means the size choice is good but not unusually broad. The visible owner reviews is 4.7 out of 5 from 32 reviews, which is positive enough to notice but still small enough that you should keep expectations measured.
Buyer trade-offs to weigh
The main trade-off is firmness versus comfort style: if you want a structured pocket sprung feel, the Space 4000 makes sense, but shoppers after plush cushioning may prefer a softer alternative. Size choice also matters here because the tracked range only covers Double, King Size and Super King, so less common sizes will need a different model. Delivery extras such as free delivery to most locations and old mattress removal may improve convenience, but you should still check whether removal is available in your area and whether any fee applies.
Price and value benchmark
At £454-£534, this mattress sits below the comparable-product median and that improves its value case if you specifically want firm support. Value is better in the Double at £454, while the larger King Size and Super King variants rise to £488 and £534, so the size you choose has a real effect on the deal you get. Always confirm the latest checkout price and stock status on Mattress Online, because retailer pricing and availability can change.
Specs versus nearby alternatives
Compared with other pocket sprung mattresses, the Space 4000 looks more support-led than comfort-led, with pocket springs and gel foam doing the heavy lifting rather than a deep pillow-top style finish. SleepSoul also has alternatives such as the Space 3000 Pocket Memory Pillow Top Mattress and the Premium Cool Gel 2000 Pocket Mattress, so it is worth comparing whether you want firmer orthopaedic wording or a different comfort layer mix. If you need more size coverage, some similar mattresses offer Single or Small Double options, which this model does not.
How much to trust the rating
The displayed 4.7 out of 5 owner rating is a positive sign, but it comes from 32 reviews and that is not a large enough sample for a strong consensus. Public review evidence around this model is supportive but thin, and there is no strong independent expert review of this exact mattress in the material supplied. Treat the rating as a useful nudge, not a final verdict, and keep the product page details and current price in the frame.
Who this mattress suits
This is a sensible shortlist option for shoppers who want firmer support, a more structured feel and a pocket sprung mattress that is not priced at the top end of the market. It is also appealing if you like the reassurance of a 100-night comfort trial and a 10-year warranty, especially when buying online. Buyers comparing value by size should also find the Double, King Size and Super King choices straightforward to line up against their budget.
Who should probably avoid it
Shoppers who want a plush, sink-in surface are likely to be better served elsewhere, because Mattress Online lists the SleepSoul Space 4000 Pocket Orthopaedic Gel Mattress as firm and the build is focused on support. It is also less convenient for anyone who needs more than the three tracked sizes — Double, King Size and Super King — and that can rule it out if your frame or room setup needs something like a Single or Small Double. And if you are looking for medical reassurance or pain-relief claims, that is not what this listing provides and it should not be read that way.
Comfort and support in everyday terms
The SleepSoul Space 4000 Pocket Orthopaedic Gel Mattress combines pocket springs with gel foam, so the feel should be more responsive and structured than a deeply contouring all-foam mattress. Mattress Online describes the gel foam as “supremely breathable and cooler than traditional memory foam,” but that should be treated as retailer wording rather than proven cooling performance. In practical terms, the firm pocket sprung build is most likely to suit sleepers who prefer a steadier surface and less sink-in comfort, while the exact fit still depends on your preferred sleep position and how much support you like under the body.
Final value view
On value, the Space 4000 looks competitive because its price sits in the lower half of the comparable set and it includes both a 100-night trial and a 10-year warranty. The real question is whether you want the firmer orthopaedic-style feel enough to justify choosing it over softer pocket sprung alternatives at a similar price. If that support-led setup matches your preference, this is a reasonable option to compare; if not, the trial and warranty will not make the feel itself more suitable.
Good alternatives to compare
The closest alternatives to compare with SleepSoul Space 4000 Pocket Orthopaedic Gel Mattress include SleepSoul Space 3000 Pocket Memory Pillow Top Mattress, Horizon Juno 5000 Pocket Memory Mattress, Silentnight UltraGel 1000 Mirapocket Mattress. Use these cards to check whether a nearby model gives you a better price, a more suitable specification or a clearer match for your space and budget.
Available 
Horizon Juno 5000 Pocket Memory Mattress
from £459-£959.
£459-£959
Sizes tracked: Single, Small Double, Double, King Size, Super King
Available 
Silentnight UltraGel 1000 Mirapocket Mattress
from £424-£848.
£424-£848
Sizes tracked: Single, Small Double, Double, King Size, Super King
Retailer details used
Last checked 2026-07-21. The source list below is included to help you check the details behind the comparison. Always confirm the latest price, delivery cost, stock status and product details with the retailer before buying.
More mattresses to compare
These related guides and reviews can help you compare nearby options before buying.
Questions about this mattress
Is the SleepSoul Space 4000 Pocket Orthopaedic Gel Mattress firm or medium feel?
Mattress Online lists it as firm, so shoppers should expect a more structured feel rather than a medium or plush sensation. If you prefer softer contouring, compare it with other pocket sprung models before ordering.
Who is this mattress best suited to?
It is a better fit for shoppers who want firmer support, a pocket sprung construction and a clearer value case at £454-£534. The 100-night comfort trial also helps if you want a little more reassurance before committing.
Does the 4.7 rating mean this is a proven bestseller?
Not by itself. The 4.7 rating is positive, but it is backed by 32 reviews, which is helpful but not enough for a strong consensus on its own. Check the current review count and product details on the retailer page.
How does the price compare with similar pocket sprung mattresses?
At £454-£534, it sits below the comparable-product median of £612, so it is priced in the more accessible half of the market. That makes the size you choose important, because the Double, King Size and Super King prices differ by £80 overall.
What sizes are available and do they affect value?
The tracked sizes are Double, King Size and Super King, and the price rises from £454 to £534 as you move up the range. That means the smaller size is the cheapest route into the model, while the larger sizes cost more but may suit couples or bigger frames better.