Sleepeezee Memory Ultimate 9500 Pocket Box Top Mattress
The Sleepeezee Memory Ultimate 9500 is a hybrid mattress with a soft to medium feel, pairing memory foam with two layers of pocket springs beneath a deep box top.
- Suits side sleepers & lighter builds
- Eases pressure at hips & shoulders
- Graphite foam feels less stuffy
£1,349
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At 36cm, the Sleepeezee Memory Ultimate 9500 is a genuinely tall mattress, which means a plush, sink-in surface with sprung support underneath. The memory foam is made with graphite to help disperse body heat, a sensible touch as memory foam can sleep warm. Handcrafted in the UK, and Sleepeezee is a National Bed Federation approved brand. It comes in five UK sizes, from Single to Super King. It's a premium spend, but the depth and layered build go some way to justifying it.
Mattress specifications
Firmness
Medium Soft
Type
Hybrid
Depth (cm)
36
Number of Layers
6
Trial Period (nights)
100
Warranty (years)
10
Price Range
£1,349 to £2,049
Best Sleeping Position(s)
Side 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?
This one suits sleepers who want a cushioned, cradling surface rather than a firm platform. The memory foam moulds to your shape, which means pressure relief around hips and shoulders, and the graphite in that foam helps carry body heat away, so it should feel less stuffy than plain memory foam. Two spring systems sit below: mini pocket springs for a closer, more responsive layer of comfort, then full pocket springs that adapt to movement and support each part of your body individually. Side sleepers and lighter builds tend to get on well with a soft to medium feel. Mattress Online lists a 100-night trial and a 10-year guarantee with this mattress, though check terms if buying elsewhere.
Key features & layer details
Knitted cover
A knitted cover tops the mattress, adding a final soft layer against you.
Microquilted layer
A micro-quilted finish gives the surface a smooth, soft feel from the first night.
Soft White Fibres
Soft synthetic fillings sit near the top to create a cosy feel. This is where much of the plushness comes from.
Memory Foam
Memory foam cradles your shape for a cushioned feel, which means pressure is spread rather than concentrated. It's made with graphite to help disperse body heat.
Mini Pocket Springs
Small, individually cased springs add a responsive comfort layer with soothing pressure relief.
Pocket Springs
The main support layer: springs encased in individual cloth pockets that adapt to movement, distributing support to each part of your body.
Layer details from mattressonline.co.uk product page, September 2026.
Best suited for?
Side sleepers
The memory foam layer moulds around hips and shoulders, which means a cushioned, cradling feel where side sleepers tend to want the most give.
Lighter sleepers
A medium soft feel with a plush fibre layer near the top suits lighter builds, who sink in enough to feel properly cradled.
Warm sleepers
Graphite in the memory foam helps disperse body heat, so it should feel less stuffy than plain memory foam through the night.
Couples
Full pocket springs in individual cloth pockets adapt to movement and support each part of the body, and the mattress comes in sizes up to Super King.
Combination sleepers
Mini pocket springs add a responsive layer under the foam, so changing position feels easier than sinking into foam alone.
If you prefer a firm, supportive-feeling surface, or you sleep mainly on your front, a soft to medium mattress like this may let your hips sink too far. Heavier sleepers who need more pushback should also look at firmer options. And at 36cm deep, standard fitted sheets may struggle, so budget for deep-fitted bedding.
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 Memory Ultimate 9500 Pocket Box Top Mattress
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FAQ's
Is the Sleepeezee Memory Ultimate 9500 soft or firm?
It's described as soft to medium. That means a plush, cradling surface with sprung support beneath, which tends to suit side sleepers and lighter builds. If you like a firmer, flatter feel, this probably isn't the one for you.
How deep is the Sleepeezee Memory Ultimate 9500 mattress?
It's 36cm deep, taller than a typical mattress thanks to its box top design. You'll likely need deep-fitted sheets, and it will sit noticeably higher on your bed frame.
Does the Memory Ultimate 9500 sleep hot?
Memory foam can hold warmth, but here the foam is made with graphite to help disperse body heat. If you're a very hot sleeper, a mattress without memory foam may still suit you better.
Does the Sleepeezee Memory Ultimate 9500 come with a trial and guarantee?
Mattress Online lists a 100-night trial and a 10-year guarantee with this mattress. The trial is the retailer's own offer rather than a Sleepeezee promise, so check the terms wherever you buy.
What sizes does the Sleepeezee Memory Ultimate 9500 come in?
Five UK sizes: Single, Small Double, Double, King and Super King.
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