Sleepeezee Centurial 01 4500 Pocket 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
£1,199
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At 26cm deep, the Sleepeezee Centurial 01 4500 pairs a layer of mini pocket springs with full-size pocket springs beneath, which means the surface can contour to your shape while the main springs handle the deeper support. Handcrafted in the UK, it comes from a National Bed Federation approved brand and is available from UK Single up to Super King. It suits most back and combination sleepers, although anyone wanting a plush, sink-in feel may find a medium a touch firm.
Mattress specifications
Firmness
Medium
Type
Pocket Spring
Depth (cm)
26
Number of Layers
4
Trial Period (nights)
100
Warranty (years)
10
Price Range
£1,199 to £1,949
Best Sleeping Position(s)
Side Sleeping
Back 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 natural comfort over synthetic foam. The wool and alpaca fillings breathe well, which means you're less likely to overheat than on a memory foam top, a genuine plus if you're a warm sleeper. Two tiers of springs, mini pockets over standard pockets, respond independently to each part of your body, so a heavier hip and a lighter shoulder each get their own level of give. Yes, it sits at the pricier end, but the handcrafted UK build and 10-year guarantee listed by the retailer go some way to justifying it. Mattress Online lists a 100-night trial, although that's the retailer's offer and requires buying a mattress protector from them.
Key features & 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.
Best suited for?
Back sleepers
Medium firmness with a deeper layer of full-size pocket springs gives steady central support, which suits lying flat while the mini springs ease pressure at the surface.
Combination sleepers
Individually cased pocket springs adapt to movement separately, so changing position feels easy and the bed does not tilt when you turn over.
Warm sleepers
Breathable wool and alpaca fillings under a viscose cover help regulate temperature, so you are less likely to overheat than on a memory foam top.
Couples
Each pocket spring responds on its own, which means a partner turning over will not rock the whole bed, and the range runs from UK Single up to Super King.
If you prefer a plush, cradling surface, a medium with a sprung feel may seem slightly firm, and one lighter-weight reviewer found exactly that. If you prefer the slow, contouring hug of memory foam, you won't get it here. And if your budget sits well under the starting price, better-suited options exist elsewhere.
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 Centurial 01 4500 Pocket Mattress
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FAQ's
How firm is the Sleepeezee Centurial 01 4500?
It's rated medium, which suits most back and combination sleepers. Firmness is felt differently depending on your weight: one lighter reviewer found it firmer than expected, and another review reported receiving a firm feel despite ordering a medium, a discrepancy that hasn't been resolved. If you're unsure, check the trial terms before you buy.
Does the Sleepeezee Centurial 01 4500 come with a trial?
Mattress Online lists a 100-night trial, but this is the retailer's own offer rather than a Sleepeezee guarantee, and it requires buying a mattress protector from MattressOnline. If you purchase elsewhere, check that retailer's returns policy, as the same trial won't automatically apply.
What is the Sleepeezee Centurial 01 4500 made of?
It combines natural fillings of British wool and alpaca wool with two layers of springs: mini pocket springs for surface comfort and full pocket springs for support. A woven viscose cover finishes it off. The mattress is 26cm deep and handcrafted in the UK.
What sizes does the Sleepeezee Centurial 01 4500 come in?
It's available in UK Single, Small Double, Double, King and Super King.
Is there a guarantee on the Sleepeezee Centurial 01 4500?
Mattress Online lists a 10-year guarantee on this mattress. As that figure comes from a retailer listing rather than Sleepeezee's own page, it's sensible to confirm the guarantee terms with whichever retailer you buy from.
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