Sleepeezee Centurial 01 4500 Pocket King Size Mattress
The Sleepeezee Centurial 01 4500 is a medium pocket spring mattress with natural fillings of British wool and alpaca, finished in a soft woven viscose cover.
- Wool & alpaca keep you cooler
- Mini springs ease shoulders & hips
- Handcrafted in the UK
£1,699
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Sleepeezee Centurial 01 4500 Pocket Mattress
More available sizes
Mattress details
Mattress
Sleepeezee Centurial 01 4500 Pocket Mattress
Size
Firmness
Medium
Construction
Pocket Spring
Wool
Depth (cm)
26
Layers
4
Layer Details
Cover
A soft, woven viscose cover sits on top. Viscose is smooth and breathable, so the surface feels gentle against bedding rather than clammy.
Comfort fillings
Beneath the cover sit generous natural fillings of British wool and alpaca wool. Wool helps regulate temperature, which means it can feel warmer in winter and cooler in summer than synthetic fillings.
Mini Pocket Springs
A layer of small, individually cased springs adds comfort close to the surface. These respond to lighter pressure, giving soothing relief at the shoulders and hips.
Pocket Springs
The main support comes from individual springs encased in cloth pockets. Each one adapts to movement separately, so support is distributed to each part of your body rather than the whole bed tilting when your partner turns over.
Layer details from mattressonline.co.uk product page, September 2026.
Key benefits
- More room each: You each get 75cm, which is 7.5cm more each than a UK double, so fewer nudged elbows and less waking up pressed against the edge.
- Length for tall sleepers: At 200cm, the UK king is 10cm longer than the UK double, which means a partner over six foot can stretch out without their feet overhanging.
- Less partner disturbance: Each pocket spring moves on its own, so when an early riser climbs out, the person still sleeping feels far less of it across the wider surface.
- Cooler for two: The wool and alpaca fillings let body heat escape, a help when two people share one bed through a warm night.
- Fits more rooms than a super king: The UK king gives most couples plenty of space, and we suggest a bedroom of at least 2.7m x 2.9m.
This size suits you if...
You share the bed every night and have started to feel cramped on a UK double, one of you is over six foot and wants proper length, or you get up at different times and want more distance between you.
Consider another size if...
Your bedroom is smaller than our suggested 2.7m x 2.9m. We'd recommend the UK double instead, for which we suggest at least 2.6m x 2.8m.
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FAQ's
Is the Sleepeezee Centurial 01 4500 UK king long enough if you're over 6ft?
The UK king measures 200cm long, or 6ft 6in, which is 10cm longer than the UK double. That extra length is often the real reason tall sleepers upgrade. The UK super king is the same length, so sizing up beyond the UK king gains you width but no extra length.
How much space do two people get on a UK king Centurial 01 4500?
Each of you gets 75cm of width when sharing. That is 7.5cm more each than the UK double. It sounds small on paper, but it is often the difference between sleeping side by side comfortably and brushing against each other every time one of you turns.
Will a bigger Centurial 01 4500 stop my partner waking me up?
The pocket springs move independently, which already limits how much movement travels across the bed. On the UK king, the 75cm each gives you more distance from your partner as well. If one of you leaves for work hours before the other, that combination should mean fewer disturbed mornings, although no sprung mattress removes movement entirely.
Sleepeezee Centurial 01 4500 UK king or UK super king for a couple?
The UK super king is 30cm wider and gives 90cm each, so the UK king gives 15cm less each. The two sizes are the same length. We suggest at least 3m x 2.9m for the UK super king, so if your room is tighter than that, the UK king is the sensible choice.
Is a UK king Centurial 01 4500 big enough during pregnancy?
With 75cm each, there is room for a pregnancy pillow or extra cushions without pushing your partner towards the edge. The medium feel and sprung support make shifting position a little easier than sinking into a soft foam top. If you also have a dog on the bed, the UK super king gives more spare width.