Last seen from £365 at Mattress Online on 2nd September 2026
SleepSoul Premium Cool Gel 1000 Pocket Mattress
The SleepSoul Premium Cool Gel 1000 Pocket is a firm hybrid that pairs 1000 pocket springs with a cool gel layer, which means solid, evenly spread support with a design aimed at slowing heat build-up.
- Sleeps cooler for longer
- Firm feel for back & front sleepers
- 10-year guarantee
At 30cm deep the SleepSoul Premium Cool Gel 1000 feels like a substantial mattress rather than a thin boxed one. Its starting price is reasonable for a hybrid of this depth, and SleepSoul backs it with a 10 year guarantee. It arrives vacuum sealed in a box and expands in around 2 hours, reaching its best after 24. Yes, the firm feel won't suit everyone, but if you want a supportive, cooler-sleeping hybrid it deserves a look.
Mattress specifications
Firmness
Firm
Type
Hybrid
Depth (cm)
30
Number of Layers
6
Trial Period (nights)
Warranty (years)
10
Price Range
Best Sleeping Position(s)
Back Sleeping
Stomach 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?
If you're a hot sleeper who needs a firmer surface, this is the kind of build that makes sense. The Coolgel layer slows heat build-up, which means you should stay comfortable for longer before you feel warm, while the breathable soft foam on top adds airflow. Underneath, 1000 pocket springs conform to your shape and prevent roll-together, so couples shouldn't drift into the middle. A memory foam transition layer gives a little sink and cuts down movement transfer, and the anti-slip base keeps the mattress steady on the frame. Add the 10 year guarantee and a mid-range starting price, and it suits back and front sleepers well, although lightweight side sleepers may find it a little too firm.
Key features & layer details
Soft Foam
A breathable top layer with airflow designed to avoid heat build-up. It contours to your body, which means less pressure on hips and shoulders.
Coolgel
Temperature-regulating gel that slows heat build-up in the mattress. In practice, that means you should sleep cooler for longer through the night.
Memory Foam
A transition layer that allows a controlled amount of sink. It also minimises movement, helpful if you share the bed.
Pocket Springs
1000 individual pocket springs conform to your body's shape, supporting you where you need it most. They also prevent the roll-together effect that can pull couples into the middle.
Soft Foam
A lower comfort layer that spreads your weight consistently. This gives the mattress a settled, even feel across its surface.
Non slip base
An anti-slip base that adds stability, so the mattress stays put on your bed frame.
Layer details from sleepsoul.co.uk product page, September 2026.
Best suited for?
Warm sleepers
The Coolgel layer slows heat build-up and the breathable soft foam on top adds airflow, which means you should stay comfortable for longer before feeling warm.
Back sleepers
A firm feel with 1000 pocket springs underneath gives a supportive, settled surface that suits lying flat on your back.
Front sleepers
Firm support from the pocket springs and an even lower comfort layer helps keep your weight spread consistently across the surface.
Couples
Pocket springs prevent the roll-together effect, and the memory foam transition layer minimises movement, so you shouldn't drift into the middle or feel your partner turning.
This is a firm mattress, so lightweight sleepers and dedicated side sleepers who need a softer surface to cushion their shoulders may find it uncomfortable. Size choice is limited too: it's catalogued in UK Small Double and UK Super King, so if you need a standard double or king you'll need to look elsewhere.
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 Premium Cool Gel 1000 Pocket Mattress
Last seen for £258 at Mattress Online on 25th June 2026
Last seen for £365 at Mattress Online on 2nd September 2026
Last seen for £484 at Mattress Online on 2nd September 2026
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FAQ's
How firm is the SleepSoul Premium Cool Gel 1000 mattress?
SleepSoul rates it as Firm. That means a supportive, less yielding surface that tends to suit back and front sleepers, and heavier sleepers who sink further into softer mattresses. Lightweight side sleepers may find it a little too firm at the shoulder.
Does the SleepSoul Cool Gel mattress sleep cool?
It's built with cooling in mind. The Coolgel layer slows heat build-up so you sleep cooler for longer, and the breathable soft foam top adds airflow. No mattress can promise a cold bed, but this design should help if you usually run warm.
How long does the SleepSoul Cool Gel 1000 take to expand?
It arrives vacuum sealed in a box. SleepSoul says it expands to good condition in 2 hours and reaches great condition within 24 hours, so you can sleep on it the same day, though it's at its best after a full day.
What guarantee comes with the SleepSoul Premium Cool Gel 1000?
SleepSoul lists a 10 year guarantee on its own site, which gives you long-term cover against manufacturing faults. That's a generous span for a mattress with a mid-range starting price.
What sizes does the SleepSoul Premium Cool Gel 1000 come in?
Retailer listings show it in UK Small Double and UK Super King. If you need a standard double or king, this model may not be available in your size.
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