Silentnight UltraGel 3000 Pocket Mattress
The Silentnight UltraGel 3000 Pocket is a hybrid mattress that pairs a gel-infused comfort layer with 3000 springs in total: 2000 Mirapocket springs plus 1000 mini springs.
- Choose medium-soft or firm feel
- Breathable gel helps disperse heat
- 60-night trial & 5-year guarantee
£719
Get the lowest price we've found
In the Silentnight UltraGel 3000 Pocket, the gel foam is breathable and relieves pressure, which means less heat build-up and fewer pressure points at your hips and shoulders. Unusually, you choose your firmness when you order, Medium/Soft or Firm, at no extra cost, so couples can pick the feel that suits them rather than settling for one middle option. At 35cm deep across all sizes, it has a substantial, hotel-style presence. It comes with a 60-night trial and a 5-year guarantee from Silentnight.
Mattress specifications
Firmness
Type
Hybrid
Depth (cm)
35
Number of Layers
3
Trial Period (nights)
60
Warranty (years)
5
Price Range
£719 to £1,269
Best Sleeping Position(s)
Side Sleeping
Back Sleeping
Stomach 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 is choice without compromise. Two firmness options, Medium/Soft or Firm, are available at the same price, which means you can match the mattress to your sleeping position instead of guessing. The pocket springs work independently to spread weight evenly and adjust to movement, so you should feel less disturbance when a partner turns over. Add the breathable gel layer and a sumptuous boxtop and you get a mattress aimed squarely at sleepers who run warm but still want a plush surface. The 60-night trial does give you a proper window to decide.
Key features & layer details
UltraGel comfort layer
A gel-infused comfort layer that is breathable, which means it helps disperse heat rather than trapping it. It relieves pressure and responds to your movements as you change position.
Boxtop
A sumptuous boxtop sits above the springs, adding a plush, cushioned feel to the sleep surface. It is the layer that gives the mattress its deep, upholstered look.
Mirapocket and mini springs
2000 Mirapocket springs and 1000 mini springs each sit in their own pocket and work independently, which means weight and pressure are spread evenly. They also adjust to movement, so you feel supported without the ripple effect of a traditional spring unit.
Layer details from silentnight.co.uk product page, September 2026.
Best suited for?
Warm sleepers
The breathable gel-infused comfort layer helps disperse heat rather than trapping it, which means you should get less heat build-up through the night.
Couples
Each person can choose Medium/Soft or Firm at no extra cost, and the independent pocket springs mean you should feel less disturbance when a partner turns over.
Side sleepers
The pressure-relieving gel layer and plush boxtop cushion your hips and shoulders, which means fewer pressure points, especially if you choose the Medium/Soft option.
Combination sleepers
The gel layer responds to your movements as you change position, while the independent pocket springs adjust with you so support stays even as you turn.
If you want a natural or foam-free mattress, the gel-infused foam here won't suit you. Budget shoppers may find the starting price a stretch. And if a long guarantee matters to you, the 5-year cover is shorter than some brands provide, so factor that into the price.
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 3000 Pocket Mattress
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FAQ's
How firm is the Silentnight UltraGel 3000 Pocket mattress?
You choose the firmness when you buy: Medium/Soft or Firm, at no additional cost. Medium/Soft tends to suit side sleepers who want a bit of give, while Firm generally suits back and front sleepers or anyone who prefers a more solid feel.
How many springs does the Silentnight UltraGel 3000 have?
It has 3000 springs in total: 2000 Mirapocket springs and 1000 mini springs. Each spring sits in its own pocket and works independently, which means weight is spread evenly and movement on one side of the bed is less noticeable on the other.
Does the Silentnight UltraGel 3000 come with a trial?
Yes. Silentnight offers a 60-night trial on this mattress, along with a 5-year guarantee. Delivery is listed at 14 days.
How deep is the Silentnight UltraGel 3000 mattress?
It is 35cm deep, and that depth is consistent across every size. It's a tall mattress, so check your fitted sheets will stretch to it before ordering.
What sizes does the Silentnight UltraGel 3000 come in?
Five UK sizes: Single, Small Double, Double, King and Super King.
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