SleepSoul Heaven Gel Pocket 3000 Single Mattress in a Box
The SleepSoul Heaven Gel Pocket 3000 is a mattress in a box, which means it arrives rolled and compressed for easier handling up stairs and through narrow doorways.
- Cool gel layer slows heat build-up
- Plush pillow top cushioning
- Zoned pocket & mini spring support
£297.22
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SleepSoul Heaven Gel Pocket 3000 Mattress in a Box
More available sizes
Mattress details
Mattress
SleepSoul Heaven Gel Pocket 3000 Mattress in a Box
Size
Firmness
Medium Firm
Construction
Pocket Spring
Rolled
Gel
Depth (cm)
Layers
4
Layer Details
Pillow-top layer
A 2cm pillow-top layer of soft, plush filling. It adds a cushioned feel on the surface, so the mattress feels gentler than the medium-firm support underneath.
Coolgel layer
A 3cm Coolgel layer designed to slow down heat build-up in the mattress. This should help if you tend to warm up overnight, though how cool you feel will still vary from person to person.
Pocket springs
1000 pocket springs that move independently to follow your body's shape and support you where you need it. They also help prevent the 'roll-together effect', which matters if you share the bed.
Mini springs
A further 2000 mini pocket springs sit alongside the main springs for extra comfort and support. Together they make up the zoned support system, so different areas of your body get different levels of support.
Layer details from sleepsoul.co.uk and mattressonline.co.uk product pages, October 2026.
Key benefits
- Fits standard single frames: At 90 x 190cm it matches the UK single frames used for most children's beds and guest beds, so you shouldn't need to replace the base.
- Frees up floor space: At 3ft wide it leaves room in a child's bedroom for a desk and wardrobe, which helps when toys and school things are fighting for the same floor.
- Easier up narrow stairs: The rolled, boxed format lets you carry it up a tight staircase or into a loft room before it expands to its full size.
- Suits a room shared by siblings: Two UK singles fit into a room far more easily than larger beds, leaving a walkway between them so each child keeps their own space.
- Practical for a study that hosts guests: In a spare room that also serves as an office, a UK single leaves enough space for a desk and chair rather than letting the bed take over.
This size suits you if...
You're buying for a child or teenager whose room also has to hold a desk and wardrobe, or you sleep alone in a compact bedroom or loft conversion where a narrow footprint is all that will fit under the slope.
Consider another size if...
You share the bed, or you're an adult who likes room to spread out. We'd recommend the UK double instead: it gives 67.5cm each for two sharing, and we suggest at least 2.6m x 2.8m for it.
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FAQ's
Will the SleepSoul Heaven Gel Pocket 3000 UK single fit a bunk bed or mid sleeper?
At 90 x 190cm it matches the standard UK single footprint that bunk, cabin and mid sleeper frames are built around. The catch is depth: SleepSoul doesn't publish a depth for this mattress, and raised frames set a maximum so the guardrail stays high enough. Check the brand's own guidance against your frame's limit before buying.
Is a UK single mattress big enough for an adult sleeping alone?
For many solo adults, yes. At 3ft x 6ft 3in it suits someone who sleeps fairly still in a compact room. If you're tall, or you sprawl and turn a lot, a UK single can feel a little narrow, and you'd be better served by the UK double, which is 45cm wider.
How much room do I need for a UK single SleepSoul Heaven Gel Pocket 3000?
We suggest allowing at least 2.1m x 2.8m of floor space for a UK single. That leaves room to walk round the bed and open drawers or a wardrobe. In a loft conversion, measure where the ceiling is high enough to sit up, since you'll want the bed's full length to fall within that area.
Should I get a UK single or UK double SleepSoul Heaven Gel Pocket 3000 for a spare room?
If your guests usually come alone and the room also serves as a study, the UK single keeps space free for a desk. If couples stay over, the UK double is 45cm wider and gives 67.5cm each, but we suggest at least 2.6m x 2.8m of floor space for it.
Where can I buy the SleepSoul Heaven Gel Pocket 3000 in a UK single?
Compare the retailers listed on this page, where the prices shown are updated as retailers change them. Stock of this model can be limited, so check that the retailer you choose has the UK single available, rather than assuming the same listing covers every size.