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Sleepeezee ActivFlex Response 2600 Pocket Pillow Top Mattress
Listen to the review on our podcast.

Sleepeezee ActivFlex Response 2600 Pocket Pillow Top Mattress

FirmnessMedium
ConstructionPocket sprung, Gel

In shortIf you like a plush, medium feel, I like the pocket springs and gel layer here. Some reviewers find the pillow top too warm, so hot sleepers should look elsewhere. Read the review


Reveal Offer Price and Go To Site
100-night comfort trial at Mattress OnlineConditions
Remedy
An exchange, not a refund
When
After 30 nights' use
Condition
Buy a mattress protector from Mattress Online with the mattress
Old mattress removal
£35
Delivery
Free; to the room of your choice £20

Checked on Mattress Online's site, 10 October 2026. Full terms at Mattress Online

What our reviewers found

Pros

The gel is great because it has many of the same benefits in comfort as memory foam but with none of the downsides. See, foam is traditionally not breathable which makes you too hot. With gel there is no such issue yet still remains extremely comfortable. 

Owners mostly describe it as comfortable and supportive, and one called it "Very sumptuous very deep comfy". A few mention the edges and how little movement crosses the bed: "Great edge stability, no rolling," one owner wrote. What's more, you get an impressive 10 year guarantee which helps go some way to showing you just how much the brand believe in the product while giving you the confidence you need to make such a considered purchase.

Cons

Heat is a recurring complaint, and it stings because some owners bought it for the cooling gel: "Gel layer isn't keeping me cooler which is a shame," one wrote, while another called it "boiling hot". Some found it firmer than they expected. A few report the pillow top starting to "develop permanent dips", or the mattress losing its support, and one owner was replacing it after "just over a year". The same owner found it heavy and warns that "two people will need to rotate it".

The Sleepeezee Immerse 2200 PocketGel Pillow Top Mattress, now sold as the Sleepeezee ActivFlex Response 2600 Pocket Pillow Top Mattress, is a luxurious mattress that contours to your shape and provides that perfect level of support for a restful night's sleep. The listing now shows a Staycool™ gel foam layer, which is supportive yet cool, and ActivFlex™ spring foam. The soft, quilted cover is made from supersoft knitted fabric, and the pillow top is filled with soft polyester fibres. That combination should feel properly soft and cosy, but a pillow top brings that slightly 'plusher' feel that can be a bit much if you prefer a firmer, flatter surface. Owners don't agree on where it sits: one classed it as "soft to medium, trending to medium" and another called it "Definitely a firm/medium".

Breaking down the layers we have a support layer and comfort layer. 

Starting with the comfort layer this mattress comes with a deep and luxurious gel layer on top. Gel is one of my favourite top layers because it is both cooling and comfortable with deep and luxurious softness that translates into a very comfortable nights sleep. Typically manufacturers try and get away with a lower filling amount while still being able to make all the typical gel benefit claims. Not so for Sleepeezee who gave the Immerse 2200 a generous 4cm of gel against the typical 2cm seen elsewhere. It's a sign of the additional quality craftsmanship and luxurious materials that went into that Sleepeezee range of mattresses. What's more, since gel is breathable you'll get a cool nights sleep. One owner wrote that the "gel top conforms to body shape and no pressure points", and another no longer wakes up with aches or pains. That much give is great for pressure relief, but with gel foam and a pillow top stacked over the springs I'd expect it to be a touch too sinky if you're heavier or like a really firm feel.

Onto the support layer and the listing now shows an impressive 2600 springs: 1200 traditional pocket springs plus 1400 mini springs, counted on a king size. I've covered the different spring systems multiple times on the website and as any long term readers will note my that pocket springs are my favourite support layer. The reason is quite simply that pocket spring tends to offer the best body contouring and long term support. With springs, the more the better is typically the rule, albeit the usefulness of additional springs tends to drop off at around 2000-2500 mark. The springs sit in a fully encapsulated unit that runs edge to edge, and an owner who mentions the edge reports great stability and no rolling. I'd still expect the soft pillow top to squash down when you sit on it, so it won't be the most rigid edge if you tend to perch on the side a lot.

When it comes to comfort you've got a medium tension from the pocket springs which is great news for most people since medium tension is largely suitable for the vast majority of people. Do you like sleeping on your side? Great, medium tensions allow your shoulder and hips to sink sufficiently into the mattress and avoid contorting of the spine and back while you sleep. Prefer sleeping on your front or back? That's fine too, medium tension supports your back and neck enough to again, offer a fantastic nights sleep. In terms of recommendations, unless you are considerably below or above BMI guidelines, a medium firmness is normally suitable. If you're a strict front sleeper though, you might still want something a bit firmer to stop the hips dipping too much.

What that means then is this mattress largely ticks all the most important boxes on someones checklist.

How we reviewed the Sleepeezee ActivFlex Response 2600 Pocket Pillow Top Mattress

34 owner reviews analysed10+ years in the mattress industry3 reliability checksBenchmarked against 364 pocket-sprung mattresses55-point spec check655 price checks since Oct 2019

Drawing on over 10 years in the mattress industry, our team assessed the construction, materials and firmness of the Sleepeezee ActivFlex Response 2600 Pocket Pillow Top Mattress from its 55-point specification in Mattress Online's listing, and benchmarked it against 364 other pocket-sprung mattresses we track. We analysed all 34 owner reviews, checking 32 written ones for sagging, heat, firmness and smell complaints. We have checked its price 655 times since October 2019. How we review


Corrections

When we get something wrong, we fix it and say so here. All corrections

11 October 2026
This mattress is now sold as the Sleepeezee ActivFlex Response 2600. We've updated the spring count from 2200 to 2600 and the guarantee from 5 years to 10.

How does it feel?

Personalised feel depends on bodyweight. Adjust your weight below to get an indication of how the Sleepeezee ActivFlex Response 2600 Pocket Pillow Top Mattress may feel.

SnoozeScore

Still not sure if the Sleepeezee ActivFlex Response 2600 Pocket Pillow Top Mattress is suitable for you?

Answer 6 quick questions to see how well this mattress fits you, and which mattresses fit you better.

Price history

From £749 (Single) at Mattress Online

Choose your size
£949High end of our 90-day readings Read 12 Nov 2026 · excludes delivery
Shop Double at Mattress Online

Our latest Double reading against the last 90 days

Low £838 (27 Oct)High £949 (2 Nov)

Double price, tracked since 27 Oct

Over 90 days the Double at Mattress Online has read from £838 to £949; the low came on 27 Oct 2026.

SizeLatest readingReadLowest readingOnTracking since
Single£74912 Nov 2026£61427 Oct 202627 Oct 2026
Small Double£94912 Nov 2026£83827 Oct 202627 Oct 2026
Double£94912 Nov 2026£83827 Oct 202627 Oct 2026
Super King£1,34912 Nov 2026£1,13427 Oct 202627 Oct 2026

Prices exclude delivery. How we record prices: our mattress price report.

How it scores
of the Sleepeezee ActivFlex Response 2600 Pocket Pillow Top Mattress
Scored from the build and owner reviews: each measure starts from how this construction usually performs, then moves with what owners of this mattress report against owners of similar mattresses.
Scored from the build and owner reviews: each measure starts from how this construction usually performs, then moves with what owners of this mattress report against owners of similar mattresses.

Suitability

  • Back Sleepers 4.5/5
  • The amount of support offered from a mattress will vary depending on the firmness of the tension and the type of support layer used. Based on a person of average build.
  • Side Sleepers 3.5/5
  • If you sleep on your side you typically need a supportive tension that is not too firm, nor too soft. This is because your hips and shoulders need adequate sinkage.
  • Stomach Sleepers 5/5
  • Stomach sleepers need a reasonable amount of tension in the base support layer to adequately offer body contouring and help prevent aches and pains. Results will vary based on your build.

Performance

  • Breathability 4/5
  • Mattresses that feature breathable materials help promote airflow and keep you cool making for a more hygienic night's sleep.
  • Turning on mattress 3.5/5
  • Certain materials like memory foam can make it difficult to move about on the mattress while you toss and turn. Same too for pillow tops which can create a cloud like sensation which can make manoeuvrability challenging.
  • Stability 4.5/5
  • Depending on the type of support layer in place can have an impact on stability, edge to edge support and roll together prevention. Pocket springs of a firmer tension will have better stability than open coil soft tension, for example.

Ease of Use

  • Turning handles 5/5
  • Mattresses typically need to be rotated frequently and having turning handles can be massively beneficial, particularly in larger sizes which can become fairly heavy.

Odour

  • Initial Odour 4.5/5
  • Materials in mattresses, particularly memory foam and rolled bed-in-a-box mattresses can have an initial odour, this is typically short term and reduces considerably within 24 hours.
  • Long Standing Odour 5/5
  • Certain materials inside different mattresses can produce a small odour. Typically this is short term rather than long standing but there are minor exceptions.

Brand Rating

  • Overall Brand Rating 4.5/5
  • This is based on community driven customer reviews tied to product reviews and grouped together at a brand level to produce a score.
*Assumes average weight. Suitability is dependent on body type, so check your SnoozeScore above for a more tailored guide.
Radar analysis
of the Sleepeezee ActivFlex Response 2600 Pocket Pillow Top Mattress
Brand: Sleepeezee
Retailer: Mattress Online
Delivery Time: Excellent
Delivery Charge: Excellent
Customer Sentiment: Good
Guarantee: Good
Radar Analysis looks at the product, brand and retailer against base norms established within the industry and determines where the product sits by way of established performance metrics.

Owners, by the numbers

Counted from 34 owner reviews of this mattress on retailer sites.

79%gave it 5 stars27 of 34 reviews
8.8%gave it 1 or 2 stars3 of 34 reviews
Middle thirdon price, at £749 (Single)160 of 277 other pocket spring mattresses cost less today

Counted from reviews published on retailer listings. Each review counts once, even where a retailer shows it on several listings, and reviews left on WantMattress are not included. The method is set out in the reliability report.

Reviews

Pick a star rating to see only those reviews.

4.5owner rating out of 534 reviews
Verified Buyer
Verified by Mattress Online
5
Top end mattress, well made and very very comfortable, you won't be disappointed.My best buy this year so far!
Verified Buyer
Verified by Mattress Online
5
Definitely a firm/medium and no movement felt from the other side of the mattress!!
Verified Buyer
Verified by Mattress Online
5
Very comfortable and well made. I don't wake up with any aches or pains any more.
Verified Buyer
Verified by Mattress Online
5
Really comfortable, great support, as good as a quality hotel mattress.
Verified Buyer
Verified by Mattress Online
5
The mattress feels comfortable looks very well made.
Verified Buyer
Verified by Mattress Online
5
Comfy firmer then expected but very comfortable
Verified Buyer
Verified by Mattress Online
5
Very sumptuous very deep comfy
Verified Buyer
Verified by Mattress Online
5
Firmness comfort
Verified Buyer
Verified by Mattress Online
5
Comfy and sturdy
Verified Buyer
Verified by Mattress Online
5
It feels comfy.
Verified Buyer
Verified by Mattress Online
5
it looks plush
Kate
Verified by Mattress Online
2
Good Points: The mattress feels comfortable & looks very well made. Improvement Points: After only having owned it for just over a year, I'm having to replace. Although initially it feels very comfortable, it offers me no support & after 8 months of spine, neck & rib problems which have now become chronic, I'll have to replace. Haven't slept properly in months.Such a waste of money. It's also so heavy, be aware two people will need to rotate it.
Emma
Verified by Mattress Online
4
Good Points: Definitely a firm/medium and no movement felt from the other side of the mattress!! Improvement Points: I had not realised that pillow top mattress's would develop permanent dips in the pillow top!! With a central ridge! I might not have elected for one had this been made clear in the description at our have, rather than just in the care instructions one purchased!
Brendan
Verified by Mattress Online
5
Excellent service, ordered in the morning on day 1, arrived at 0700 on day 2. Mattress is very comfortable, I would class it as a soft to medium, trending to medium which is what I wanted. Great edge stability, no rolling, gel top conforms to body shape and no pressure points. Due to the gel it is warmer than our old one but not too hot.
Philippa
Verified by Mattress Online
1
Good Points: it looks plush Improvement Points: its boiling hot! they say there is cooling gel technology in the mattress, which is why I bought it, then why slap a huge pillow ontop which makes you sweat and get none of the cooling gel technology at all. Overall really disappointed and if I wasn't so busy I would have sent it back
Tess
Verified by Mattress Online
4
Good Points: Very comfortable and well made. I don't wake up with any aches or pains any more. Improvement Points: Gel layer isn't keeping me cooler which is a shame, as that was the main reason for my purchase of this particular mattress
Lizzy
Verified by Mattress Online
5
Good Points: Comfy firmer then expected but very comfortable Improvement Points: Compared to some of the other mattresses it looks cheaper but it's good value and so far can't fault it we are sleeping better.
Gavin
Verified by Mattress Online
5
Good Points: Top end mattress, well made and very very comfortable, you won't be disappointed. My best buy this year so far!
Trusted Customer
Verified by Mattress Online
5
Good Points: Really comfortable, great support, as good as a quality hotel mattress.
Bridget
Verified by Mattress Online
5
Good Points: Very sumptuous very deep comfy Improvement Points: Nothing really
Catherine
Verified by Mattress Online
5
Good Points: It feels comfy. Improvement Points: It was on the dearer side.
Mihaita
Verified by Mattress Online
5
This review contains a rating only; no comment was left by the customer.
Hendrik
Verified by Mattress Online
5
This review contains a rating only; no comment was left by the customer.
Edward
Verified by Mattress Online
5
This review contains a rating only; no comment was left by the customer.
Fenn
Verified by Mattress Online
5
This review contains a rating only; no comment was left by the customer.
Aires
Verified by Mattress Online
5
This review contains a rating only; no comment was left by the customer.
Mark
Verified by Mattress Online
5
This review contains a rating only; no comment was left by the customer.
Julie
Verified by Mattress Online
5
This review contains a rating only; no comment was left by the customer.
Gary
Verified by Mattress Online
4
This review contains a rating only; no comment was left by the customer.
Francesco
Verified by Mattress Online
1
This review contains a rating only; no comment was left by the customer.
Jacqueline
Verified by Mattress Online
5
Good Points: Firmness & comfort Improvement Points: None
Alexander
Verified by Mattress Online
5
Good Points: Comfy and sturdy Improvement Points: None
Peter
Verified by Mattress Online
4
Good Points: Good quality Improvement Points: Too firm
Adam
Verified by Mattress Online
5
Very comfy and supportive

Questions and answers about the Sleepeezee ActivFlex Response 2600 Pocket Pillow Top Mattress

Common questions answered by our team first, then questions shoppers asked the retailer, with the retailer’s own answers.

Image of the post author
Common question
Is the mattress suitable for both back and side sleepers?

Answer: Yes, this mattress is medium tension so it's suitable for back and side sleepers. However, for back sleepers looking for more support, a slightly firmer product might be better.

Videos about this mattress

Hand picked video that relates to the specifications of The Sleepeezee ActivFlex Response 2600 Pocket Pillow Top Mattress

Everything's Easy When You Sleepeezee
Everything's Easy When You Sleepeezee
By Mattress Online
Benefits of Gel Mattresses
Benefits of Gel Mattresses
By BedStar
What are Pocket Springs?
What are Pocket Springs?
By BedStar
What is a Pillow Top?
What is a Pillow Top?
By JohnRyanByDesign

Guides this mattress is featured in

This mattress is listed in 10 of our guides because its build meets what each guide looks for. Each card says what that is.

  • Fibromyalgia guide

    Why it’s featured

    This guide lists soft-medium and medium pocket-sprung or hybrid mattresses with a latex or gel top, which cushion without holding heat.

    Includes comment from a registered clinician
    Read the guide
  • Anti-allergy guide

    Why it’s featured

    This guide lists medium and medium-firm pocket-sprung or hybrid mattresses that the retailer sells as anti-allergy or hypoallergenic.

    Includes comment from a registered clinician
    Read the guide
  • Hot sleepers guide

    Why it’s featured

    This guide lists pocket-sprung and hybrid mattresses with a gel, latex or natural-fibre layer, which let heat out.

    Includes comment from a registered clinician
    Read the guide
  • Lighter sleepers guide

    Why it’s featured

    This guide lists soft to medium mattresses without a memory foam top, unless latex is there too, which a lighter body can settle into.

    Includes comment from a registered clinician
    Read the guide
  • Older sleepers guide

    Why it’s featured

    This guide lists medium and medium-firm pocket-sprung or hybrid mattresses with a springy top rather than memory foam, which are easier to turn on and get up from.

    Includes comment from a registered clinician
    Read the guide
  • Pressure sores guide

    Why it’s featured

    This guide lists medium pocket-sprung or hybrid mattresses with a latex or gel layer and no pillow top, which spread pressure without a deep sink.

    Read the guide
  • Arthritis guide

    Why it’s featured

    This guide lists medium and medium-firm pocket-sprung or hybrid mattresses with a latex or gel layer, which cushion the joints and are easy to move on.

    Read the guide
  • Night sweats guide

    Why it’s featured

    This guide lists pocket-sprung and hybrid mattresses with a gel, latex or natural-fibre layer, which run cooler than deep foam.

    Read the guide
  • Menopause guide

    Why it’s featured

    This guide lists pocket-sprung and hybrid mattresses with a gel, latex or natural-fibre layer, for anyone who runs hot at night.

    Read the guide
  • Pregnancy guide

    Why it’s featured

    This guide lists soft-medium and medium pocket-sprung and hybrid mattresses, which suit side sleeping through pregnancy.

    Read the guide

Clinicians comment on the condition in each guide, not on individual mattresses.

Sources for this review

  • Our assessmentConstruction, materials and firmness judged by our team, from over 10 years in the mattress industry
  • Specification55 points from Mattress Online's listing
  • Owner reviews34 analysed, 32 written ones checked across 3 reliability topics
  • Price history655 checks since October 2019
  • BenchmarkCompared with 364 other pocket-sprung mattresses we track
  • Site-wideOur price tracker has logged 1,351,752 retailer prices since June 2019

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