If you’re shopping for a new mattress and you’ve narrowed your list to options that promise both support and a genuinely plusher “hotel-bed” feel, the Silentnight UltraGel 1200 Mirapocket Pillow Top Mattress is likely to catch your eye. It’s positioned as a comfortable, modern take on a pocket-sprung mattress: you get the responsive, body-aware support that pocket springs are known for, paired with a breathable gel-infused foam layer and a pillow top that softens the initial contact, so it doesn’t feel like you’re lying directly on the spring unit.
What makes this model especially interesting is that it blends two design priorities that don’t always coexist neatly: on the one hand, a zoned spring system intended to keep your midsection properly supported (where many people tend to dip), and on the other, a comfort package aimed at pressure relief and a fresher sleep surface, which is often what side sleepers and “lightly achy” sleepers are chasing. Based on its build, its stated firmness and the kind of feedback it’s attracting, it reads as a mattress designed for the mainstream sleeper who wants reliable support without giving up that cushioned, pillow-topped finish.
How it performed in everyday use
Support and spinal alignment
At the core are 1200 Mirapocket® springs (based on a king size), each sitting in its own fabric pocket so it can respond independently to your weight and movement rather than forcing the whole mattress to react as one. In practical terms, this usually translates to a mattress that feels more “tailored” than an open-coil equivalent: your shoulders and hips can settle in, while the rest of you stays more evenly held up.
A key part of the feel here is the zoned design through the centre third of the mattress, which is engineered to be firmer under the lower back and hips. That tends to be good news for people who want a medium mattress that still takes lumbar support seriously; it’s the sort of structure that can help stop that subtle hammocking effect you sometimes get with softer, more indulgent tops.
Pressure relief and comfort
On top of the spring system, you’ve got a 3cm layer of Silentnight’s UltraGel™ foam, which is designed with an open-cell structure to encourage airflow and help disperse heat. Comfort-wise, this layer is doing a lot of the “welcome in” work: it’s made to shape around the body to reduce pressure, but with enough bounce-back that you don’t feel stuck, and you can change position without that slow, heavy resistance that some people associate with traditional memory foam.
Then there’s the pillow top itself, which is really the defining feature for anyone comparing this to a simpler pocket-sprung mattress. It creates a plusher surface feel straight away, taking the edge off that more structured spring support underneath, so you get cushioning at the point of contact without the mattress tipping into an overly soft, sink-in profile.
Temperature and breathability
This mattress leans into “freshness” as a theme, and the construction backs that up in a few ways. The UltraGel™ foam is designed to allow air to move through more freely than denser foams, the internal spring unit naturally promotes airflow compared with all-foam designs, and the mesh border is specifically there to improve ventilation around the sides of the mattress—an area that can otherwise trap heat and moisture.
That said, cooling comfort is personal, and the one piece of real-world feedback available here is a reminder that “cooler” isn’t always universally better. One customer described the gel effect as feeling a bit too cool for the time of year, to the point that it didn’t suit their mum, and they ended up swapping the mattress. If you love a crisp, cooler sleep surface, that may sound appealing; if you’re someone who already runs cold, or you’re buying for an older relative who prefers warmth, it’s worth factoring in and planning bedding accordingly.
Motion isolation and ease of movement
Because the springs are pocketed, the mattress should isolate movement better than older-style coil systems, since the springs move more locally rather than tugging on the whole structure. The comfort layers also aim to absorb some of that surface movement, while the UltraGel™ foam’s faster bounce-back should make it easier to reposition without the mattress feeling sluggish or overly enveloping.
In plain terms, this is likely to suit couples who want a bit of responsiveness (so the bed doesn’t feel “dead”), but still want a calmer surface than you’d expect from a more traditional, bouncy spring mattress.
Edge support
A notable practical feature is the rod edge border, designed to increase stability around the perimeter. The benefit of good edge support is easy to underestimate until you live with it: it can make the mattress feel larger in day-to-day use, it’s more comfortable to sit on when getting dressed, and it helps if you tend to sleep close to the edge or share the bed with someone who spreads out.
Here, the aim is a reduced “roll-off” sensation, so you can use the full sleeping surface without feeling like the side collapses away from you—particularly helpful for couples, and also for anyone who values a more secure, supported edge.
Materials and construction
The overall build is best described as a pocket-sprung mattress with a plush, breathable comfort package. You’ve got a Mirapocket® spring core with zoning through the centre for targeted support, topped with UltraGel™ foam for pressure relief and temperature management, plus layers of soft white fibres to add a snug feel and help maintain the mattress shape over time. The finish is designed to feel cushioned and comfortable straight away, with a pillow top and a microquilted surface incorporating polyester fibres and foam.
The cover is a soft knit breathable fabric that’s OEKO-TEX® certified, which offers some reassurance that it’s been tested to be free from harmful substances—an understated detail, but one that matters if you’re sensitive to certain materials or simply want more peace of mind about what you’re sleeping on.
- 1200 Mirapocket® springs (king size count) for personalised, responsive support
- Zoned centre third for extra support through the lower back and hips
- 3cm UltraGel™ foam layer for breathable, pressure-relieving comfort
- Pillow top and microquilted finish for a plusher surface feel
- Soft white fibre layers for comfort, breathability and shape retention
- Mesh border to encourage airflow and reduce heat/moisture build-up
- Rod edge support for a sturdier perimeter and maximised sleep space
- Medium firmness
- Single-sided: rotate seasonally for more even wear
- Made in the UK; 28cm depth; 5 Year Guarantee
What customers thought
There isn’t a large pool of customer feedback provided here, but the review we do have is useful because it highlights something many mattress descriptions gloss over: temperature comfort isn’t a simple “cooler is always better” equation. The customer described the mattress as “good quality,” which speaks to an overall positive impression of build and finish, but noted that the gel element felt a bit too cool for that time of year and didn’t suit their mum—enough that they chose to swap it.
That kind of comment tends to come from people who are particularly sensitive to temperature changes, and it can be more common when a mattress is bought for someone else, because the recipient’s sleep preferences may be different from the purchaser’s expectations. It doesn’t read like a complaint about support, comfort, sagging or poor construction; it’s a preference-based issue tied to the cooling feel. If you’re considering this mattress for a guest room, for an older family member, or for someone who likes to feel “cosy” rather than “fresh,” it’s a helpful nudge to think about seasonality, room temperature and bedding choices.
What people didn’t like
The main downside raised in the available feedback is that the gel comfort layer can feel too cool, particularly at certain times of year, and that this cooling sensation may not suit everyone. While many shoppers actively seek a fresher sleep surface, this is one of those features that can divide opinion: for warm sleepers it can be a perk, but for cold sleepers it can be a deal-breaker.
Who it’s best for
This mattress makes the most sense for sleepers who want a medium feel with a noticeably cushioned top, without losing the underlying structure that keeps you well supported through the night. In my view, the medium tension works well for both back and side sleepers, but it does a better job for those who sleep on their side, because the pillow top and foam layer help take the sting out of pressure points around the shoulder and hip while the zoned spring unit stops the midsection from dropping too far.
Average-weight sleepers should generally find a comfortable balance here regardless of sleeping position, and combination sleepers who switch between side and back may particularly appreciate the fact that the foam is designed to contour without feeling slow or restrictive. If you’re primarily a back sleeper who likes a very “locked-in” supportive feel, you may still prefer something a touch firmer for even stronger lumbar contouring and a more on-top sensation—but if you want support with a softer first impression, this sits in a very agreeable middle ground.
Care, durability and peace of mind
It’s a single-sided mattress, which keeps day-to-day care simple: you don’t need to flip it, but rotating it seasonally is recommended to help it wear more evenly and maintain its comfort over time. With its rod edge support, spring core and durable fibre layers, the construction is geared towards holding its shape and staying supportive, and it’s made in the UK under high safety and quality standards.
Silentnight also backs it with a 5 Year Guarantee for manufacturing faults, which won’t answer every question a shopper might have about long-term comfort preferences, but does provide a level of reassurance that there’s support in place if something isn’t right structurally.
Bottom line: Is the Silentnight UltraGel 1200 Mirapocket Pillow Top Mattress worth it?
If you like the idea of a pocket-sprung mattress with a plush, pressure-relieving top and a fresher feel through the night, this is a well-judged option with a sensible set of design choices: zoned Mirapocket® support for alignment, a breathable gel foam layer for comfort and temperature management, and a stable edge that helps you use the full surface of the bed. It’s the sort of mattress that should feel immediately inviting, yet still supportive enough to suit most people who land around the medium-firm preference zone.
The main caveat is also refreshingly clear from real feedback: the cooling feel may be too much for some sleepers, particularly those who run cold or prefer a warmer bed. If that sounds like you (or the person you’re buying for), it’s worth considering whether you’d be happier with a less cooling comfort layer—or planning to balance it with warmer bedding in colder months. For everyone else, especially side sleepers and those who want a comfortable pillow top without sacrificing stability, it’s a strong contender in the “supportive but plush” category.
