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.