Coolflex Essentials Pocket Memory Hybrid Small Double Mattress
The Coolflex Essentials Pocket Memory Hybrid pairs 800 pocket springs with a 2cm memory foam top layer, which means you get spring support with a softer, body-hugging surface.
- Eases pressure at hips & shoulders
- Support where your body needs it
- Hypoallergenic & antimicrobial
£229
Get the lowest price we've found
Save with the previous model
Some retailers still sell the earlier version of this mattress for less than the current model's best price.
Coolflex Essentials Pocket Memory Hybrid Mattress
More available sizes
Mattress details
Mattress
Coolflex Essentials Pocket Memory Hybrid Mattress
Size
Firmness
Medium
Construction
Foam
Pocket Spring
Hybrid
Memory Foam
Depth (cm)
24
Layers
2
Layer Details
Memory Foam
A 2cm layer of memory foam sits on top, moulding to your body for orthopaedic support and comfort. In practice, this means less pressure on your hips and shoulders as you settle in.
Pocket Springs
Beneath the foam are 800 individual pocket springs, each hand-sewn into its own fabric pocket. They work independently, so the mattress responds to your shape rather than moving as one unit.
Layer details from mattressnextday.co.uk product page, September 2026.
Key benefits
- Real space for one: At 120 x 190cm you can starfish, roll and shift position freely, and the 800 pocket springs respond to you individually wherever you end up on the surface.
- Fits rooms a double won't: The UK small double is 15cm narrower than the UK double, which can be the difference between a door that clears and one that doesn't.
- A medium feel across the whole width: The 2cm memory foam layer softens pressure at your hips and shoulders, and with the extra width you're never sleeping close to the edge.
- Easy bedding and frames: 4ft is a standard UK size, so small double fitted sheets and frames are widely available rather than a specialist hunt.
- Sensible for occasional guests: Two people can share for the odd night, and the independent pocket springs mean one guest turning over won't jolt the other awake.
This size suits you if...
You're a solo adult who has outgrown a single and wants room to spread out without giving the bedroom over to the bed, you're furnishing a box room, studio or loft conversion where 15cm of width decides what fits, or you need a guest room bed that handles a couple for the occasional weekend without dominating the room the rest of the year.
Consider another size if...
You share the bed every night, in which case 120cm gets tight quickly. If your room allows at least 2.6m x 2.8m, we'd recommend the UK double instead for that extra 15cm of width.
Similar Mattresses in This Price Range
Did you know? On Mattress Unboxed we have over 1,000 different mattresses to suit all types of sleepers. View all mattresses.
FAQ's
Is a small double Coolflex Essentials big enough for a couple?
For occasional nights, yes. Across the 120cm width the 800 pocket springs move independently, so you won't feel every turn your partner makes. As an every-night bed for two it's a squeeze, though: for regular sharing the UK double, 15cm wider at 135 x 190cm, is the better call.
What room size do I need for a small double mattress?
We suggest allowing at least 2.4m x 2.8m for a UK small double, which leaves room to open the door, walk round the bed and fit a bedside table. It's our own guidance rather than the manufacturer's, so treat it as a comfortable minimum rather than a hard rule.
How much wider is the Coolflex Essentials small double than the single?
The UK small double is 30cm wider than the UK single, and the two are the same length at 6ft 3in. That extra width is the whole point of the size: a teenager or adult who's outgrown a single gets real stretching room without the footprint of a full double.
What bedding fits the Coolflex Essentials in a small double?
You'll need small double (4ft) fitted sheets, and a standard double duvet works well on top. At 24cm deep, the mattress sits within the range most standard fitted sheets are cut for, so you shouldn't need extra-deep bedding.
Where can I buy the Coolflex Essentials small double?
Compare the retailers listed on this page. The prices shown here are live and updated as retailers change them, so it's worth checking back if you're not ready to buy today, as stock and pricing for this size can shift.