Sleepeezee Jessica 1800 Pocket Gel Mattress
The Sleepeezee Jessica 1800 Pocket Gel is a hybrid mattress, meaning it combines foam comfort layers with pocket springs, which gives you cushioning at the surface and proper support underneath.
- Gel layer disperses body heat
- Memory foam eases pressure points
- Minimises partner disturbance
£749
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The Sleepeezee Jessica 1800 Pocket Gel is described by Sleepeezee as medium in feel, so it should suit most back and side sleepers without feeling too hard on shoulders and hips. At 27cm deep with a gel layer designed to disperse body heat, it makes a sensible pick if you tend to sleep warm. It comes in five UK sizes, from single to super king. It is handcrafted in the UK and holds a Which? Best Buy award.
Mattress specifications
Firmness
Medium Firm
Type
Hybrid
Depth (cm)
27
Number of Layers
4
Trial Period (nights)
100
Warranty (years)
10
Price Range
£749 to £1,399
Best Sleeping Position(s)
Back Sleeping
Stomach Sleeping
Combination Sleeping
Certifications
BS 7177
Assessed from the specification published by Mattress Online, captured September 2026, and from regular price comparison across our UK retail partners.
Why should you choose this mattress?
The appeal here is the balance between comfort and cooling. A 3cm StayCool gel layer sits near the surface with an open cell structure, which means heat has somewhere to go rather than building up around you. Beneath that, 3cm of memory foam cradles pressure points, and 1800 pocket springs handle the support. The spring unit is more clever than it sounds: 1000 mini springs contour to your shape while 800 traditional springs do the heavier lifting. Across verified owner reviews on Mattress Online it holds a 4.6 rating from 83 reviews, and it is a National Bed Federation approved brand. If you want memory foam comfort without the usual overheating, this is a strong candidate.
Key features & layer details
Knitted cover
A soft knitted finish that adds cosiness while allowing air to move through, which means the surface stays fresher overnight. It is designed for breathability rather than heat retention.
StayCool™ Gel
A 3cm gel layer with an open cell structure, which creates space for airflow and helps disperse excess body heat. This is the layer doing most of the work if you normally sleep warm.
Memory Foam
A 3cm layer that gently moulds to your shape, which means pressure eases at the shoulders and hips where you sink in most. Helpful if you wake with aches from firmer surfaces.
Pocket Springs
1800 individual pocket springs in total: 1000 SoftTech mini springs that contour closely to your body, plus 800 traditional pocket springs beneath for support. Because each spring moves independently, you should feel less disturbance from a partner turning over.
Layer details from mattressonline.co.uk product page, September 2026.
Best suited for?
Warm sleepers
A 3cm StayCool gel layer with an open cell structure gives heat somewhere to go, which means less overheating than typical memory foam.
Side sleepers
The 3cm memory foam layer moulds to your shape, which means pressure eases at the shoulders and hips where you sink in most.
Back sleepers
Medium firm support from 800 traditional pocket springs sits beneath softer mini springs, which means your back is held steadily without feeling too hard.
Couples
Each of the 1800 pocket springs moves independently, which means you should feel less disturbance when your partner turns over in the night.
Combination sleepers
Contouring mini springs over a supportive spring base suit changing positions, since the medium firm feel works for both back and side sleeping.
If you prefer a properly firm surface, perhaps because you sleep on your front or simply like a solid feel, the medium comfort here may be softer than you want. Owner reviews also mention the mattress is heavy, so if you rotate your mattress alone or struggle with lifting, factor that in.
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.
Sleepeezee Jessica 1800 Pocket Gel King Size Mattress
Sleepeezee Jessica 1800 Pocket Gel Mattress
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FAQ's
Is the Sleepeezee Jessica 1800 firm or medium?
Sleepeezee's product information describes it as medium. In practice that means a balanced feel: soft enough for side sleepers to sink in at the shoulder, with 1800 pocket springs providing support underneath. Lighter sleepers may find it feels slightly firmer than heavier ones do.
Does the Sleepeezee Jessica 1800 sleep cool?
It is designed to. A 3cm StayCool gel layer with an open cell structure sits near the surface to disperse body heat, and the knitted cover is made for airflow. Owner reviews mention a cooler sleeping experience, which is reassuring if memory foam has left you overheating before.
How deep is the Sleepeezee Jessica 1800 mattress?
It is 27cm deep, a fairly generous depth that should work with standard fitted sheets, though very shallow ones may be a snug fit. The depth comes from the combination of gel and memory foam layers over a full pocket spring unit.
Does the Sleepeezee Jessica 1800 come with a trial and guarantee?
Mattress Online lists a 100-night trial and a 10-year guarantee with this mattress. Both are that retailer's own terms, so if you buy elsewhere, check what your chosen retailer offers before ordering.
What sizes does the Sleepeezee Jessica 1800 come in?
Five UK sizes: single, small double, double, king and super king. It sits at a mid-range price for a UK-handcrafted hybrid with this spring count.
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