Silentnight UltraGel Cool-to-touch 3000 Mattress review: Plush, supportive and cooler than expected

Cooling mattresses are everywhere at the moment, but very few manage to properly balance pressure relief, breathability and a premium feel all at once. Now that we’re heading into warmer temperatures, I’ve been on the hunt for the perfect one, and the latest contender for that title is the Silentnight UltraGel Cool-to-touch 3000 Mattress.

Combining a thick pillow-top finish with a dual-layer 3000 spring support system and a cooling gel comfort layer, Silentnight is clearly targeting anyone who wants luxury comfort without the overly dense feeling that often comes with memory foam.

I slept on the mattress for three months, and below is exactly how it held up.

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Price and availability

The Silentnight UltraGel Cool-to-touch 3000 Mattress is available in five sizes, with pricing starting from £930 for a single. Buyers can also choose between a soft or firm comfort rating, with no price difference between the two options. For the purpose of this review, I tested the king model in the firm rating.

I’d also recommend buying directly from Silentnight’s website if possible, as the brand regularly includes sleep bundles and extras depending on how much you spend. That said, the mattress is also available through retailers like Dunelm and MattressOnline if you prefer shopping elsewhere.

Delivery and unboxing

Silentnight offers free delivery on its mattresses, alongside a mattress removal service for £30. This needs to be booked in advance, with your old mattress ready for collection on the same day as delivery. I actually took advantage of this service myself, as I had a previous review mattress that needed collecting, and the process itself was very straightforward.

Delivery was confirmed around five after ordering, which is much faster than some other mattress deliveries I’ve experienced. However, on the morning of the scheduled delivery, I received a text saying it had been cancelled and that a new date would follow shortly after. I was never actually given a reason for the delay, but a replacement delivery date was arranged for around a week later and thankfully went ahead without any issues.

The team brought the mattress in and removed my old one without any problems. It was seriously heavy at around 75kg and arrived double-wrapped in thick plastic, so it's absolutely not the sort of mattress you’ll be casually carrying upstairs by yourself.

After unboxing, I did notice a fairly strong off-gassing smell, which actually surprised me because it's normally associated more with boxed mattresses than traditional sprung models. It’s completely normal and nothing to worry about, but it’s definitely worth mentioning if you’ve never experienced it before, as it can initially feel a little alarming. In my case, the smell gradually disappeared after around a week to a week and a half.

Design and features

The Silentnight UltraGel 3000 Pocket Mattress belongs to the brand’s UltraGel range, which focuses heavily on cooling comfort and pressure relief. It’s also one of Silentnight’s bestselling collections, and after spending time with it, it’s easy to see why.

The main headline feature is the UltraGel cool-to-touch comfort layer, which Silentnight says is designed to instantly draw heat away from the body as soon as you lie down. Unlike traditional memory foam, which can sometimes trap heat, the UltraGel material is designed to be far more breathable whilst still contouring gently around the body. Combined with the thick pillow-top and additional fibre comfort layers, the result is a mattress that feels plush, soft and immediately inviting.

Beneath the cooling layer sits the mattress’ 3000-spring support system. This combines 2000 full-sized Mirapocket springs with an additional 1000 mini springs layered above them. The idea behind this dual-layer setup is to improve both support and airflow whilst also helping the mattress contour more accurately to different body shapes. Because each spring moves independently, motion transfer is also reduced, which is particularly useful if you share a bed with someone else.

Visually, the mattress looks every bit as premium as its price tag suggests. The deep pillow-top design gives it a luxurious appearance, whilst the 37cm depth makes it feel incredibly substantial. Integrated turning handles and reinforced edges also help it feel durable and practical day to day.

The mattress is also single-sided and no-turn, meaning you don’t need to fully flip it over. Instead, Silentnight simply recommends rotating it from head to toe every few months to help maintain even wear over time.

Performance

It’s no secret that the Silentnight UltraGel Cool-to-touch 3000 is an extremely comfortable mattress, and after sleeping on it for three months, my sleep quality has been excellent. What I’ve personally loved most is that it sits perfectly between a traditional pocket sprung mattress and a cooling hybrid, so it doesn’t have the dense sensation you get with full memory foam, but it still delivers enough comfort through the gel layer and quilted surface to feel supported.

I also found it noticeably more breathable than many hybrid mattresses I’ve tested previously, which is particularly important for me as someone who overheats quite easily during the night. The cool-touch surface effect is most noticeable when you first climb into bed, and whilst that initial cooling sensation naturally fades after around 30 minutes to an hour, the mattress overall still sleeps cooler than many rivals I’ve tried.

Support has also been excellent, which I think largely comes down to that 3000-spring setup. Even when either my partner or I moved during the night, the other person was rarely disturbed, and the mattress maintained its support really consistently throughout testing.

The surface comfort itself is also fantastic underneath a fitted sheet. It has a soft cushioned feel that works especially well for side sleepers or anyone who dislikes very firm mattresses. I found it particularly helpful around pressure relief on my hips and shoulders, whilst the gel-infused comfort layer also gives the mattress a slightly more responsive feel than traditional memory foam.

That said, after a few weeks of testing, I did notice a ridge beginning to form slightly in the middle between where my partner and I sleep. Silentnight recommends rotating the mattress every few months, but this appeared earlier than I expected considering we were testing the firm version. Once rotated, the issue improved, but it’s definitely something worth being aware of if you’re investing long-term. I’d also recommend rotating it sooner rather than later to help maintain the mattress properly.

The other thing worth noting is the sheer depth of the mattress. At 37cm thick, even some deep fitted sheets won’t fully fit properly. Most standard deep sheets tend to max out around 35cm, so it’s definitely worth checking measurements carefully before buying new bedding.

Verdict

The Silentnight UltraGel Cool-to-touch 3000 is an extremely comfortable mattress that successfully blends the support of a traditional pocket sprung bed with the softer feel of a modern hybrid. The plush pillow-top design feels luxurious, whilst the UltraGel layer adds noticeable breathability that kept it feeling cooler than many rival mattresses I’ve tested.

That said, the mattress’ huge 37cm depth can make fitted sheets surprisingly awkward, and I did notice some dipping developing slightly earlier than expected, meaning regular rotation is definitely important here. However, if you’re after a premium-feeling mattress with a strong support underneath and a cooler sleep surface this is easily one of Silentnight’s best offerings.

Alternatives to consider

If you like the idea of a premium mattress with great support, consider the Sleepeezee Centurial 03. It sits slightly higher in price but its plush pillow-top design easily makes it one of the most comfortable models I’ve tested over the years.

Another alternative would be the Bensons for Beds Slumberland Air 9.0 Memory Mattress. Its combination of supportive pocket springs, pressure-relieving memory foam and breathable materials creates a sleep surface that feels both luxurious and well balanced.