Firmness
Firm
Type
Hybrid
Depth (cm)
29
Number of Layers
2
Trial Period (nights)
60
Warranty (years)
5
Price Range
£475 to £879
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 layer is designed to adapt as you move, which means you get a touch of cushioning at the surface without the slow, stuck-in feeling some foam mattresses have. Beneath that, 1400 Mirapocket springs adjust to your body weight individually, so a heavier hip and a lighter shoulder each get the support they need. Silentnight says the zoned support is scientifically proven to improve spinal alignment and posture. Add a 60-night trial, a 5-year guarantee and delivery in 14 days, and it's a low-risk way to try a firm hybrid. It's stocked by four retailers, so shopping around on price is easy.
Key Features & what's inside
- UltraGel™ layer. A gel infused comfort layer that Silentnight describes as smart and responsive, designed to adapt to your movements. In practice that means comforting, soothing cushioning at the surface rather than a deep sink.
- Mirapocket® springs. 1400 individual pocket springs that adjust to your body weight, giving ease of movement and zoned support. Silentnight states this zoning is scientifically proven to improve spinal alignment and posture.
Layer details from silentnight.co.uk product page, September 2026.
Who's it NOT for?
If you sleep on your side and are on the lighter side, a firm mattress like this may not let your shoulder and hip sink in enough, which can cause pressure points. Fans of a plush, hugging feel should look at softer hybrids or all-foam options instead.
Silentnight UltraGel 1400 Pocket Mattress
How firm is the Silentnight UltraGel 1400 Pocket mattress?
Silentnight rates it as Firm. That means a supportive, on-top-of-the-bed feel rather than a soft sink, which tends to suit back and front sleepers, and anyone who prefers a sturdier surface.
Does the Silentnight UltraGel 1400 come with a trial and guarantee?
Yes. Silentnight offers a 60-night trial and a 5-year guarantee, so you have two months to decide whether the firm feel works for you at home.
How deep is the Silentnight UltraGel 1400 mattress?
It's 29cm deep, a generous depth that should work with standard fitted sheets, though it's worth checking deep-pocket sheets if yours are on the shallow side.
What sizes does the Silentnight UltraGel 1400 come in?
Five UK sizes: Single, Small Double, Double, King and Super King. Prices range from £475 to £879 depending on size.
How long does delivery take for the Silentnight UltraGel 1400?
Silentnight lists delivery within 14 days. If you buy from one of the four retailers stocking it, delivery terms may differ, so check before ordering.
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