Sleepeezee SensaGel 4000 Single 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
£899
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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
- Leaves floor space free: At 3ft x 6ft 3in, the UK single fits beside a desk and wardrobe, which means a teenager's room can still hold everything they need.
- Firm support for growing teens: The pocket spring core keeps the spine level through the night, and the pillow top softens the surface so a firm feel doesn't come across as hard.
- Comfortable enough for guests: A spare room with a UK single can host visitors on a proper hybrid rather than a thin fold-out, and the cool-touch cover helps guests who run warm.
- Fits a sloping loft ceiling: The narrow UK single footprint can slide under the low side of a loft conversion, although the 30cm depth leaves slightly less headroom when you sit up.
- Easy position changes on a narrow bed: Mini springs in the pillow top respond quickly, so turning over on a UK single feels easier than on a foam top that holds your shape.
This size suits you if...
You sleep alone and want firm support in a compact bedroom, you're kitting out a teenager's room where a desk and wardrobe also need space, or you want a guest bed that feels far closer to a proper mattress than a sofa bed does.
Consider another size if...
You're an adult who spreads out at night and has floor space to spare. We'd recommend the UK small double instead; we suggest at least 2.4m x 2.8m for the UK small double.
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FAQ's
Is the Sleepeezee SensaGel 4000 UK single too deep for a bunk bed?
It might be. The UK single is 30cm deep, which is taller than many bunk, cabin and mid sleeper frames are designed for. A deep mattress raises the sleeper closer to the top of the safety rail, so check the frame maker's maximum mattress depth before you buy for a raised bed.
Is a firm UK single mattress suitable for a child?
It depends on the child. The SensaGel 4000 is firm, and lighter sleepers may not sink far enough into the pillow top to feel much cushioning, especially if they sleep on their side. It tends to suit older, heavier teenagers better than young children.
What size is the SensaGel 4000 single in feet and inches?
The UK single measures 3ft x 6ft 3in, or 90 x 190cm. That's the standard UK single, so single fitted sheets and a single duvet will fit, although you'll want deep-pocket sheets to cover the 30cm depth properly.
How much room do I need for a SensaGel 4000 UK single?
We suggest at least 2.1m x 2.8m of floor space for a UK single. That leaves room to walk round the bed and open a wardrobe, which matters in a child's room or a box room doing double duty as an office.
Should I buy the SensaGel 4000 in a UK single or UK small double for a teenager?
The UK single is 30cm narrower than the UK small double, and both are the same length. If the room is tight, the UK single keeps space free for a desk. If your teenager is broad or sprawls, the UK small double gives more width, and we suggest at least 2.4m x 2.8m for it.