Sleepeezee Jessica 800 Pocket Support Super King Mattress
The Sleepeezee Jessica 800 Pocket Support is a hybrid mattress with 800 pocket springs and a gel foam layer, which means you get responsive support with a slightly cooler feel than traditional memory foam.
- Gel foam sleeps cooler
- Minimises partner disturbance
- Handcrafted in the UK
£999
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Sleepeezee Jessica 800 Pocket Support Mattress
More available sizes
Last seen for £656 at Mattress Online on 25th June 2026
Mattress details
Mattress
Sleepeezee Jessica 800 Pocket Support Mattress
Size
Firmness
Medium Firm
Construction
Foam
Pocket Spring
Hybrid
Gel
Depth (cm)
27
Layers
3
Layer Details
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.
Key benefits
- 90cm each for two sharers: Each of you gets a full 90cm of width, which means you can turn over or spread out without edging into your partner's half.
- Distance from a restless partner: The 800 pocket springs move independently, and at this width there is also real space between you, so a fidgety sleeper is far less likely to wake you.
- Space when the household piles in: If a child wanders in at night or a large dog sleeps on the bed as routine, a UK super king leaves the adults with a usable share rather than a sliver.
- 10cm of extra length: At 200cm long, the UK super king is 10cm longer than the UK small double and UK single, which helps taller sleepers keep their feet on the mattress.
- In proportion in a large room: In a spacious master bedroom or a period property with high ceilings, a bed this wide looks settled in the room rather than lost in it.
- A cooler surface across a big bed: The gel foam layer sleeps a little fresher than traditional memory foam, which helps when two bodies and a child share one wide surface.
This size suits you if...
You share the bed with a partner who moves a lot and you want real distance between you, or your nights regularly include a child or a large dog, and your bedroom comfortably meets our suggested minimum of 3m x 2.9m.
Consider another size if...
Your bedroom is smaller than 3m x 2.9m, or you mostly sleep alone. We'd recommend the UK small double instead, and for that size we suggest a room of at least 2.4m x 2.8m.
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FAQ's
Is the Sleepeezee Jessica 800 super king wide enough for a restless partner?
For most couples, yes. The UK super king gives you 90cm each, and the 800 independently moving pocket springs limit how much movement travels across the bed. The combination of physical distance and isolated springs means a partner turning over at night is much easier to sleep through than on a narrower size.
Can two adults and a child sleep on a Jessica 800 super king?
A UK super king is the most practical size for this, because 180cm of width leaves both adults a workable share when a young child joins you. It will feel busier than two adults alone, but far less cramped than the UK small double, which is 60cm narrower.
How much bigger is the Jessica 800 super king than the small double?
The UK super king is 60cm wider and 10cm longer than the UK small double. That extra width turns a bed that suits one person, or a close couple, into one where two adults each get their own space.
Will a Sleepeezee Jessica 800 super king fit in a loft conversion bedroom?
It can, if the floor space is there. We suggest allowing at least 3m x 2.9m for a UK super king, and in a loft conversion the sloping ceiling usually decides which wall the headboard goes against. Measure your door swing and landing turns before ordering too.
Is the Jessica 800 super king a good size for sharing with a dog?
If a large dog sleeps on the bed every night, a UK super king makes the most sense of the sizes this mattress comes in. With 180cm of width, the dog can take the foot or a corner and both of you still keep a proper share of the bed.