Why our sleep experts loved it
I tried the Sleepeezee Nova 1800 Combination Mattress in a Dreams showroom to see whether this graphite memory foam is genuinely different to feel in the body when you lay on it. Surprisingly, it was – a touch less sticky and a little less instantly warm than the handful of foam-topped hybrids within my reach on the shop floor. But a more important realisation for me, once I was actually lying down, was about the comfort grade: this is a very firm mattress and, after the initial give of the top layer, the deeper support feels so unyielding that it quickly became uncomfortable for me to lie on, even on my back.
If you have been looking for something that feels properly solid and supportive you might see that as a win. If, like me, you are after a mattress that offers a little give through the support layers and not just on the surface, it can feel more punishing than it is helpful.
Construction & Materials This is a hybrid mattress that combines graphite memory foam on top with a pocket spring core underneath. The spec sheet lists graphite memory foam as the main comfort filling, 1600 pocket springs, and a 29cm depth.
On the outside it uses a “Breeze” cover that is designed to be more breathable, and it is built with edge-to-edge support, which is designed to keep the perimeter more stable than a softer, less reinforced structure. It is also made in the UK.
Firmness & Feel The feel is very firm and does not try to hide it. The top layer offers you that familiar memory foam contouring first, a gentle softening and a bit of moulding under your shoulders and hips. But it is not a deep, plush sink and, once you have compressed the foam, you meet the support layer, which feels dense and resistant.
That transition is the reason it can feel reassuringly supportive to the right person, but for me it is also why it became uncomfortable. After the initial comfort layer there was very little secondary give and it felt like my pressure points were being propped up rather than cushioned in.
Performance & Support In terms of keeping you level, the Nova 1800 does a very convincing job. It feels like it is designed to hold your body in a straighter line rather than letting your hips dip. If you are a back sleeper who wants a stable, orthopaedic-leaning feel that can be a real positive.
The edge support also registered clearly in-store. Sitting on the side of the mattress and shifting position felt more secure than on the softer hybrids, with less of that slide-off sensation. For couples, or anyone who likes to use the full width of the mattress, that sturdier perimeter is a practical benefit.
Where it can fall down is pressure relief, especially if you are lighter, curvier, or sensitive at the shoulders and hips. On my frame it felt too unyielding once I reached the deeper layers and that is the kind of firmness that can turn into aches rather than ease them over time.
Temperature Regulation The graphite memory foam did feel a little different to standard memory foam in the showroom, less immediately warm and less claggy on contact. The cover is also designed to improve breathability, which should help with airflow compared with a more traditional, less ventilated knit.
That said it is still a foam-topped mattress. If you are a very hot sleeper I would still treat “cooling” as a relative rather than absolute judgement here and I would prioritise how it feels to you in person, not just the marketing.
Practical Features There is a lot here that will appeal to shoppers who like a tidy set of functional upgrades: the breathable cover, graphite infused foam, edge-to-edge support, and a substantial depth that makes it feel more premium when you first see it on display.
The bigger practical point is that the feel is quite specific. A very firm mattress can be brilliant if it matches you and miserable if it does not so it is one I would always recommend trying in-store and being honest with yourself if you feel even slightly “pushed up” in an uncomfortable way.
Who It Suits Back sleepers who want a very stable, held-up feel and dislike deep sink.
Heavier sleepers who often find medium hybrids too soft and want stronger resistance through the core.
People who like memory foam, but not the clammy feel as the graphite foam has a slightly cleaner, less sticky sensation than many traditional foams.
Anyone who values edge stability for sitting on the side of the bed or spreading out across the surface.
Who It Doesn’t Suit Most side sleepers , especially if you need the mattress to flex more at the shoulders and hips.
Pressure-point sensitive sleepers who prefer a more adaptive, forgiving support layer beneath the top foam.
Those who want plush comfort , because the overall feel is intentionally firm and can feel unyielding once you get past the initial foam.
Final Verdict The Sleepeezee Nova 1800 Combination Mattress stands out because the graphite memory foam is genuinely different to feel from the more generic foams you find on many hybrid mattresses. It is a cleaner, less sticky type of contouring and the build as a whole feels purposeful, especially with the edge support and the very firm comfort grade.
However it is also one of those mattresses where the design choice will polarise people. For me, it was simply too firm and, once I compressed the top layer, the deeper support felt rigid rather than adaptive. If you try it and immediately think “finally, something solid” you might love it. If you feel even a hint of discomfort in-store I would take that seriously, because this is not the kind of mattress that gently melts away under you over time.
Why you can trust WantMattress
We spend hours testing (and/or researching) every product or service we review, so you can be sure you’re buying the best. Find out more about
how we test .
