Firmness
Type
Hybrid
Depth (cm)
29
Number of Layers
2
Trial Period (nights)
60
Warranty (years)
5
Price Range
£419 to £790
Best Sleeping Position(s)
Certifications
Assessed from Silentnight's published specification for this mattress, captured September 2026, and from regular price comparison across our UK retail partners.
The main draw here is the combination of gel and springs. The UltraGel comfort layer responds to your movements, which means pressure points such as hips and shoulders get relief without you sinking too far. Beneath it, the Miracoil spring system runs from head to toe, designed to keep your spine aligned and reduce partner disturbance, so if you share a bed with a restless sleeper you should feel less of their tossing and turning. Breathable foam in the build helps with airflow too. Yes, the medium/firm feel is a little unforgiving for dedicated side sleepers, but for back and front sleepers who want proper support with a softer top, it's a well-judged balance at this price.
Key Features & what's inside
- UltraGel™ comfort layer. A gel infused layer that sits at the top and responds to your movements, which means cushioning that adapts as you shift position. Silentnight describes it as offering supreme comfort with strong pressure relief, so it should ease strain around hips and shoulders.
- Miracoil® springs. This spring system runs from head to toe rather than side to side, which is designed to keep your spine aligned through the night. It also helps prevent partner disturbance, so movement on one side of the bed transfers less to the other.
Layer details from silentnight.co.uk product page, September 2026.
Who's it NOT for?
The medium/firm feel means lightweight side sleepers may find it a little too solid for comfortable pressure relief at the shoulder. If you strongly prefer a soft, sink-in surface, or the deep contouring of an all-foam mattress, this spring-led design probably isn't the one for you.
Silentnight UltraGel Miracoil Pillowtop Mattress
How firm is the Silentnight UltraGel Miracoil Pillowtop mattress?
Silentnight rates it as medium/firm. In practice that means a supportive feel with some surface cushioning from the gel infused comfort layer, suiting back and front sleepers well. Lighter side sleepers may find it slightly firmer than ideal.
Does the Silentnight UltraGel Miracoil Pillowtop come with a trial?
Yes. Silentnight offers a 60-night trial, so you can sleep on it at home before committing fully. It also comes with a 5-year guarantee, and delivery is quoted at 14 days.
How deep is the Silentnight UltraGel Miracoil Pillowtop mattress?
It's 29cm deep. That's a generous depth, so check your fitted sheets will stretch to fit. Deeper mattresses like this often feel more substantial to sleep on and sit higher on the bed frame.
What sizes does the Silentnight UltraGel Miracoil Pillowtop come in?
Five UK sizes: Single, Small Double, Double, King and Super King. Prices range from £419 to £790 depending on the size you choose, and it's stocked by several retailers, so it's worth comparing prices before you buy.
Is the Silentnight UltraGel Miracoil good for couples?
It's a reasonable choice. The Miracoil spring system is designed to prevent partner disturbance, which means you should feel less movement when the person next to you shifts or gets up. The medium/firm support also helps heavier sleepers avoid rolling towards the middle.
Couldn't find an answer to your question? Send us a message