Sleepeezee ActivFlex Response 2600 Memory Single Mattress
The Sleepeezee ActivFlex Response 2600 is a medium-tension memory mattress that pairs 2,600 pocket springs with cooling gel and a pillow top, which means you get the contouring of foam without losing the responsive support of springs.
- Cooling gel draws heat away
- Minimises partner disturbance
- Medium feel suits most sleepers
£749
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Sleepeezee ActivFlex Response 2600 Memory Mattress
More available sizes
Mattress details
Mattress
Sleepeezee ActivFlex Response 2600 Memory Mattress
Size
Firmness
Medium
Construction
Memory Foam
Depth (cm)
26
Layers
5
Layer Details
Soft Knitted Cover
A breathable knitted cover finishes the mattress with a genuinely soft, luxurious surface feel. It also helps air move through the top of the mattress.
Pillow Top
A sumptuous pillow top of soft polyester adds full-body cushioning before you reach the working layers below. This is where the plush, sink-in first impression comes from.
Staycool™ Gel
A deep layer of Staycool gel actively draws heat away from your body, which means the cooling works with you all night rather than fading after an hour. It also moulds to your curves for pressure relief from head to toe.
ActivFlex™ Spring Foam
This engineered foam combines the benefits of springs and foam, targeting tension relief while moulding to your body shape. In practice, it gives you contouring without the stuck-in-the-mattress feel some memory foams have.
Pocket Springs
The core combines full-size, barrel-shaped pocket springs with fast-reacting mini comfort springs. Each spring moves independently, so your partner's tossing and turning is far less likely to reach your side.
Layer details from mattressnextday.co.uk product page, September 2026.
Key benefits
- A small footprint that leaves the room usable: At 90 x 190cm (3ft x 6ft 3in), it leaves space for a desk, wardrobe and toy storage in a child's or teenager's bedroom.
- Cooling that matters in small rooms: Compact bedrooms and loft rooms run warm, and the Staycool gel layer draws heat away from a sleeper all night rather than fading after an hour.
- Genuine comfort for guests: The plush pillow top and 2,600 pocket springs make this a spare bed visitors will actually enjoy, rather than politely tolerate.
- Grows with a teenager: Medium tension with contouring foam suits lighter bodies now and heavier ones later, so it should see a child through into their teens.
- Manageable to move at this size: It arrives flat rather than rolled, but the UK single is the lightest and narrowest size in the range, which makes stairs and doorways far less of a battle.
This size suits you if...
You're buying for a child or teenager and want something more supportive than a basic budget single, you sleep alone in a compact room or loft conversion where 90cm of width is all the floor plan allows, or you're furnishing a spare room that doubles as an office and need a proper mattress that doesn't dominate the space.
Consider another size if...
You're an adult who shares the bed, or you simply want more room to spread out. The UK double is 45cm wider than the UK single and the same length; allow at least 2.6m x 2.8m for it.
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FAQ's
Will the UK single ActivFlex Response 2600 fit a bunk bed or mid sleeper?
Be careful here. The 90 x 190cm footprint matches standard bunk and mid-sleeper frames, but this mattress is 26cm deep, and many raised frames specify a shallower maximum so the safety rail still sits above the mattress. Check your frame's stated depth limit before buying; a slimmer single may be the safer choice for a top bunk.
Is the Sleepeezee ActivFlex Response 2600 single good for a child or teenager?
Yes, with one caveat. The medium tension and contouring layers suit lighter, growing bodies, and the Staycool gel helps in small bedrooms that hold heat. The pillow top is plush for a first big-kid bed, so very young children used to a firmer surface may take a little time to adjust.
How much floor space does the UK single need?
The mattress itself measures 90 x 190cm, or 3ft x 6ft 3in. We suggest allowing at least 2.1m x 2.8m of floor space, which leaves room to walk alongside the bed and open drawers or a wardrobe. That makes it workable in box rooms, loft conversions with a narrow flat ceiling section, and shared children's rooms with two beds.
Does the UK single ActivFlex Response 2600 arrive rolled in a box?
No, it arrives flat rather than vacuum-rolled, which is typical for a traditional pillow-top mattress. The good news is that the UK single is the easiest size in the range to manoeuvre, so tight staircases and small landings are less of a problem than they would be with the UK double or larger.
Is this single a sensible choice for a spare room?
It's a strong fit. The 90cm width keeps floor space free in a room that also holds a desk or storage, and the pillow top with 2,600 pocket springs gives guests a level of comfort most spare-room singles don't. Compare the retailers listed on this page, as prices are updated whenever they change.