Silentnight UltraGel Miracoil Pillowtop Mattress
The Silentnight UltraGel Miracoil Pillowtop is a hybrid mattress that pairs a gel infused comfort layer with Silentnight's Miracoil spring system, which means you get pressure relief on top and steady support underneath.
- Gel layer eases hips & shoulders
- Minimises partner disturbance
- 60-night trial & 5-year guarantee
£391.04
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At 29cm deep with a medium/firm feel, the Silentnight UltraGel Miracoil Pillowtop suits back and combination sleepers who want a supportive base with some cushioning. It comes in sizes from UK Single up to Super King, and Silentnight backs it with a 60-night trial and a 5-year guarantee. It won't be right for everyone, and lighter side sleepers may find the medium/firm feel slightly too solid, but it's a sensible mid-priced option.
Mattress specifications
Firmness
Medium Firm
Type
Hybrid
Depth (cm)
29
Number of Layers
2
Trial Period (nights)
60
Warranty (years)
5
Price Range
£391 to £719
Best Sleeping Position(s)
Back Sleeping
Stomach Sleeping
Combination Sleeping
Certifications
Assessed from Silentnight's published specification for this mattress, captured September 2026, and from regular price comparison across our UK retail partners.
Why should you choose this mattress?
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 a mid-range starting price.
Key features & layer details
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.
Best suited for?
Back sleepers
The medium/firm feel and head-to-toe Miracoil springs give a supportive base that keeps the spine aligned, with the gel layer adding some cushioning on top.
Combination sleepers
Because the UltraGel layer responds to your movements, the cushioning adapts as you shift position, while the firmer spring base makes changing position feel easy.
Couples
The Miracoil spring system is designed to reduce partner disturbance, so movement on one side of the bed transfers less to the other.
Front sleepers
A medium/firm feel keeps the hips from sinking too far, while the softer gel top still gives some comfort for those who sleep on their front.
Warm sleepers
Breathable foam in the build helps with airflow, which suits anyone who tends to feel the heat overnight.
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.
Save on an earlier or ex-display model
Some retailers still sell the earlier version of this mattress, or ex-display and returned stock at a lower price. These are the sizes where it costs less than the current model's best price.
Silentnight UltraGel Miracoil Pillowtop Mattress
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FAQ's
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.
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.
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