Sleepeezee SensaGel 4000 Small Double Mattress
The Sleepeezee SensaGel 4000 is a firm hybrid mattress, 30cm deep, combining 4,300 springs in total (pocket springs and mini springs combined) with a gel foam and memory foam pillow top.
- Eases pressure at shoulders & hips
- Firm core helps keep spine aligned
- Cool-touch cover for warm sleepers
£1,124
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Sleepeezee SensaGel 4000 Mattress
More available sizes
Mattress details
Mattress
Sleepeezee SensaGel 4000 Mattress
Size
Firmness
Firm
Construction
Foam
Pocket Spring
Hybrid
Memory Foam
Gel
Depth (cm)
30
Layers
9
Layer Details
Cool-touch knitted cover
A knitted cover with a cool-touch finish, which means the surface feels cooler when you first lie down. Helpful if you're a warm sleeper.
Pillow top: soft comfort layer
A soft layer at the top of the pillow top that provides the initial cushioning you feel when you get into bed.
Pillow top: high-density support layer
A denser layer beneath the soft one, which means the cushioning doesn't collapse under your weight. It keeps the pillow top feeling supportive rather than saggy.
Pillow top: memory foam
Memory foam moulds to your shape, easing pressure at the shoulders and hips. This is part of what softens the firm feel at the surface.
Pillow top: Dreamzone profiled body-contouring gel foam
A profiled gel foam that contours to your body, which means support follows your shape rather than pushing back uniformly. The gel element also helps with heat.
Pillow top: mini springs
Small springs within the pillow top add responsiveness, so the surface springs back quickly when you move. This makes changing position easier than on all-foam tops.
Core: traditional pocket springs
Individually wrapped springs that move independently, which means less motion transfer to your partner and support tailored to where your body needs it.
Core: mini springs
A second layer of mini springs in the core adds a finer level of responsiveness beneath the main pocket springs.
Core: high-density support layer
A firm base layer that anchors the whole mattress, giving the springs a stable foundation and helping edge-to-edge durability.
Layer details from furniturevillage.co.uk product page, September 2026.
Key benefits
- Space to sprawl on your own: At 120cm wide, which is 30cm more than a UK single, you can sleep starfish or lie at an angle without an arm hanging off the edge.
- Fits rooms a double would crowd: We suggest a room of at least 2.4m x 2.8m, so the UK small double can go into a loft conversion or narrow second bedroom where a UK double would feel cramped.
- Calmer nights for visiting couples: The individually wrapped pocket springs move independently, which means two guests feel a little less of each other's turning on a width that is snug for two.
- A cooler surface in a warm room: If your loft room holds heat, the cool-touch knitted cover means the mattress feels cooler as you first lie down.
- A standard UK size: Measuring 4ft x 6ft 3in, the UK small double matches common frames, though at 30cm deep you'll want fitted sheets with generous pockets.
This size suits you if...
You sleep alone and want more elbow room than a UK single gives, your bedroom can't spare the floor a UK double needs, or couples only stay over for the occasional weekend.
Consider another size if...
You share the bed every night, as the UK small double is snug for two adults. We'd recommend the UK double instead, which gives 67.5cm each; allow at least 2.6m x 2.8m.
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FAQ's
Is the Sleepeezee SensaGel 4000 small double big enough for one adult?
For most solo sleepers, yes. The UK small double is 120cm wide, 30cm more than a UK single, so you can shift position freely. It shares the 190cm length of the UK single, so the extra space is all in the width rather than the length.
What size room do I need for a SensaGel 4000 small double?
We suggest at least 2.4m x 2.8m for the UK small double. That leaves room to walk around the bed and open a door. For comparison, we suggest at least 2.6m x 2.8m for the UK double, so the smaller width can make the difference in a box room or loft.
Is a small double SensaGel 4000 good for a guest room?
It suits a guest room where couples visit occasionally. The pocket springs help limit disturbance when one guest turns over. Bear in mind the feel is firm, so lightweight side sleepers may find it a little solid even with the pillow top.
Should I get the SensaGel 4000 in a small double or a double?
Choose by how often the bed is shared. The UK small double is 15cm narrower than the UK double and the same length. If two of you sleep there nightly, the UK double gives 67.5cm each and needs a room of at least 2.6m x 2.8m.
Is the SensaGel 4000 small double a good upgrade for a teenager?
It can be, if they've outgrown a UK single but the room is tight. The UK small double adds 30cm of width with no extra length. We suggest at least 2.4m x 2.8m, against 2.1m x 2.8m for the UK single. The firm feel may suit heavier teens better than slight ones.