Sleepeezee Zenith 4500 Combination Super King Mattress
The Sleepeezee Zenith 4500 Combination Mattress combines a plush pillow top with micro springs and a double layer of graphite memory foam, which means a softer-feeling surface that helps draw heat away as you sleep.
- Plush pillow top feels cushioned
- Graphite foam draws heat away
- Support that runs edge to edge
£1,799
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Sleepeezee Zenith 4500 Combination Mattress
More available sizes
Mattress details
Mattress
Sleepeezee Zenith 4500 Combination Mattress
Size
Firmness
Medium
Construction
Memory Foam
Pocket Spring
Depth (cm)
35
Layers
4
Layer Details
Breeze 3D knit cover
A knitted cover that's up to 40% more breathable than standard fabrics, which means air moves more freely at the surface.
Plush pillow top with micro springs
A plush pillow-top layer with micro springs that adds a softer surface. It gives the mattress a cushioned feel on top of its medium rating.
Double graphite memory foam
Two layers of graphite-infused memory foam that help draw heat away from the body, so you get foam comfort with less heat build-up.
Pocket spring unit
Individually wrapped pocket springs giving responsive support and edge-to-edge support, so the whole surface feels usable.
Layer details from crushedvelvetbedstore.co.uk product page, November 2026.
Key benefits
- Distance from a restless partner: With 90cm each, a partner who turns all night is far enough away that their movement matters less than any comfort layer could manage.
- Room for a small visitor: When a child climbs in at 3am, the 180cm width means two adults keep a usable share instead of clinging to opposite edges.
- Edges you can actually use: The pocket springs support right to the sides, which means the outer strip of a bed this wide still feels like sleeping space when it gets crowded.
- In proportion in a large room: In a spacious master or a period bedroom with high ceilings, the 35cm depth and full width keep the bed from looking lost against the walls.
- A cushioned surface for everyone: The medium rating and plush pillow top give both sleepers the same cushioned feel across the whole 180cm, so neither side ends up on a harder strip.
This size suits you if...
You share the bed with a partner who tosses and turns, or children or a large dog regularly end up between you, and your bedroom has at least 3m x 2.9m of floor space to give over.
Consider another size if...
Your bedroom measures under 3m x 2.9m, or the bed would crowd your doors and wardrobes. We'd recommend the UK king instead, which needs at least 2.7m x 2.9m.
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FAQ's
Is the Sleepeezee Zenith 4500 UK super king too big for my bedroom?
Allow at least 3m x 2.9m for the 180 x 200cm UK super king, with around 3.5m x 3.2m feeling comfortable. In a loft conversion master, the sloping ceiling usually decides which wall the bed goes against, so measure the full-height section before you buy, not the total floor area.
How much more space does a UK super king Zenith 4500 give than a UK king?
The UK super king is 30cm wider than the UK king, and the two are the same length. Shared between two people, that works out at 15cm more each: 90cm per sleeper compared with 75cm on the UK king. If a partner's restlessness is the main issue, that extra width is where you'll feel the difference.
Will a super king Zenith 4500 fit up my stairs?
Measure before ordering. At 180 x 200cm and 35cm deep, this is a large, deep mattress to carry, and tight landing turns or a door that swings into the bedroom can stop it. Measure the narrowest point of the staircase and the bedroom doorway with the door fully open, then compare the retailers listed on this page.
What size duvet and sheets fit the Zenith 4500 in a UK super king?
Use super king sheets and a 260 x 220cm duvet. The mattress is 35cm deep, so check the pocket depth on any fitted sheet before you buy, because shallow ones may not tuck under properly. Bedding at this size costs more, so budget for it alongside the mattress.
Is a UK super king Zenith 4500 big enough for two adults and a child?
For a child who joins you in the night, yes, in most cases. Each adult starts with 90cm, and the pocket springs support to the edges, so moving over to make room doesn't leave you perched on an unsupported side. It suits occasional visits better than three people sleeping together every night.