Firmness
Medium Firm
Type
Hybrid
Depth (cm)
27
Number of Layers
3
Trial Period (nights)
100
Warranty (years)
10
Price Range
£284 to £598
Best Sleeping Position(s)
Certifications
Assessed from the specification published by Mattress Online, captured September 2026, and from regular price comparison across our UK retail partners.
The appeal here is straightforward: pocket sprung support at a reasonable price. The 800 individual springs move independently, which means less motion transfer from a restless partner and pressure relief where your body needs it. Above the springs, a gel foam layer and Sleepeezee's Platinum Breathable layer work on temperature, so if you tend to sleep warm you should feel a slightly fresher surface than standard memory foam gives. It's handcrafted in the UK and carries hypoallergenic and vegan-friendly credentials. Buy through Mattress Online and you get a 100-night trial and a 10-year guarantee under their terms, which takes some of the risk out of the decision. Sizes are limited to UK Single, Small Double and Super King.
Key Features & what's inside
- Platinum Breathable™ layer. A temperature-regulating top layer that helps your body stay at a comfortable temperature through the night. In practice, that means less waking up too hot or too cold.
- Gel Foam. A breathable foam that sleeps cooler than traditional memory foam, which means you get cushioning for aches and pains without the trapped heat. It gives the sleep surface a fresher feel.
- Pocket Springs. 800 individual pocket springs mould to your body shape, relieving pressure and delivering that medium to firm support. Because each spring moves independently, you'll feel less disturbance when a partner shifts position.
Layer details from mattressonline.co.uk product page, September 2026.
Who's it NOT for?
If you prefer a soft, sink-in feel, this medium to firm mattress will likely feel too solid, and some owners do report it feels firmer than expected. Sizes are limited too: there's no standard UK Double or King, so you may need to look elsewhere for those.
Sleepeezee Jessica 800 Pocket Support Mattress
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How firm is the Sleepeezee Jessica 800 mattress?
Sleepeezee describes it as medium to firm. That suits back sleepers and heavier side sleepers well, although lightweight side sleepers may find it a little too firm on the shoulders and hips. Some owner reviews mention it feeling firmer than expected, so factor that in if you like a softer surface.
Does the Sleepeezee Jessica 800 come with a trial period?
Mattress Online lists a 100-night trial with this mattress, along with a 10-year guarantee. These are the retailer's own terms rather than a manufacturer-wide offer, so if you buy elsewhere, check that retailer's trial and returns policy before ordering.
Is the Sleepeezee Jessica 800 good for hot sleepers?
It should help. The gel foam layer is more breathable than traditional memory foam, and the Platinum Breathable top layer is designed to regulate temperature, which means a cooler surface than an all-foam mattress typically offers. It won't feel icy, but it shouldn't trap heat either.
What sizes does the Sleepeezee Jessica 800 come in?
It's available in UK Single, UK Small Double and UK Super King, priced from £284 to £598. That's a limited range: there's no standard Double or King listed, which rules it out for a fair number of buyers.
How is the Sleepeezee Jessica 800 delivered?
Mattress Online offers free delivery to most locations with a two-hour time slot and a call on delivery day. You can choose next day delivery on weekdays, pick a weekday up to 60 days ahead, or opt for weekend delivery. Room delivery costs £20 and old mattress recycling £35.
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