Firmness
Firm
Type
Hybrid
Depth (cm)
30
Number of Layers
6
Trial Period (nights)
Warranty (years)
10
Price Range
£365 to £484
Best Sleeping Position(s)
Certifications
Assessed from SleepSoul's published specification for this mattress, captured September 2026, and from regular price comparison across our UK retail partners.
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 from-price of £365, and it suits back and front sleepers well, although lightweight side sleepers may find it a little too firm.
Key Features & what's inside
- 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.
Who's it NOT for?
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.
SleepSoul Premium Cool Gel 1000 Pocket Mattress
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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 at this price.
What sizes does the SleepSoul Premium Cool Gel 1000 come in?
Retailer listings show it in UK Small Double and UK Super King, priced from £365 to £484. If you need a standard double or king, this model may not be available in your size.
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