Silentnight UltraGel 3000 Mirapocket Box Top Softer Mattress
The Silentnight UltraGel 3000 Mirapocket Box Top Softer is a hybrid mattress with a soft feel, pairing pocket springs with a box top, which means an extra cushioned layer sewn on top for a plusher surface than a standard mattress.
- Soft feel for side sleepers
- Minimises partner disturbance
- Cushioned box top from night one
£678
Get the lowest price we've found
The Silentnight UltraGel 3000 Mirapocket Box Top Softer comes in UK Single, Small Double, Double and King sizes. It carries a 4.6 rating on Mattress Online, and the retailer lists a 5 year guarantee. If you sleep on your side or simply prefer a sink-in feel, a soft box top design like this is a sensible place to start, although we can't confirm the full layer breakdown from the brand.
Mattress specifications
Firmness
Soft
Type
Hybrid
Depth (cm)
Number of Layers
2
Trial Period (nights)
Warranty (years)
Price Range
£678 to £1,294
Best Sleeping Position(s)
Side Sleeping
Certifications
Assessed from the product page published by Mattress Online, 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 a genuinely soft feel with hybrid support. Pocket springs move independently, which means less disturbance when a partner shifts in the night, while the box top adds a settled, cushioned surface from the first night rather than needing to bed in. It sits at a reasonable price for a branded hybrid, and Silentnight is a long-established UK name. The 5 year guarantee listed by the retailer offers some reassurance, though it's shorter than some brands provide. Suits side sleepers and lighter bodies well, although anyone who prefers a firmer, more supported feel should look elsewhere in the range.
Key features & layer details
UltraGel comfort layer
A gel-infused foam layer that Silentnight says responds to your movements. In practice, that means it should adjust as you shift position, so you can toss and turn without feeling stuck in one spot.
Mirapocket and mini springs
This layer combines 2000 Mirapocket springs with 1000 mini springs, giving zoned support. The idea is that different areas of your body get the support they need, which helps balance the soft top with a more stable base.
Layer details from silentnight.co.uk product page, October 2026.
Best suited for?
Side sleepers
The soft feel and cushioned box top let shoulders and hips settle in, which suits anyone who spends the night on their side.
Lighter sleepers
Lighter bodies sink into the soft surface more easily, so the cushioned box top feels comfortable from the first night without needing to bed in.
Couples
Pocket springs move independently, which means less disturbance when a partner shifts in the night, and the range of sizes includes Double and King.
Combination sleepers
A settled, cushioned surface from the first night suits people who start on their side and move around, though those wanting a firmer feel should look elsewhere.
This is a soft mattress, so it's unlikely to suit stomach sleepers or heavier bodies who need firmer support to keep the spine aligned. Box top designs also can't be flipped, only rotated. If you like sleeping on top of your mattress rather than settling into it, choose a firmer model.
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 Mirapocket Box Top Softer Mattress
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FAQ's
How firm is the silentnight ultragel 3000 mirapocket box top?
It's rated soft. Combined with the box top, a cushioned layer sewn onto the sleep surface, you can expect a plush, sink-in feel. That tends to suit side sleepers and lighter people, but it's a little forgiving for those who need firm support.
What sizes does the silentnight ultragel 3000 come in?
It's available in UK Single, Small Double, Double and King sizes.
Does the silentnight ultragel 3000 have a guarantee?
The retailer lists a 5 year guarantee with this mattress. Check the terms at the point of purchase, as guarantee cover can vary by seller.
Is the silentnight ultragel 3000 a pocket sprung mattress?
Yes, it's a hybrid that uses Silentnight's Mirapocket springs. Pocket springs respond individually to pressure, which means better contouring to your body and less motion transfer across the bed than open-coil designs.
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