Silentnight UltraGel 1400 Pocket Double Mattress
The Silentnight UltraGel 1400 Pocket is a firm hybrid mattress that pairs a gel infused comfort layer with 1400 pocket springs.
- Firm feel with zoned support
- Gentle gel cushioning, no deep sink
- 60-night trial & 5-year guarantee
£587.15
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Silentnight UltraGel 1400 Pocket Mattress
More available sizes
Mattress details
Mattress
Silentnight UltraGel 1400 Pocket Mattress
Size
Firmness
Firm
Construction
Foam
Pocket Spring
Hybrid
Gel
Depth (cm)
29
Layers
2
Layer Details
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.
Key benefits
- Room for two in most bedrooms: At 135 x 190cm, the UK double fits comfortably in rooms where a UK king would crowd the walking space around the bed.
- Pocket springs matter more at this width: With 67.5cm each for two people sharing, springs that respond to each sleeper individually stop one partner's movement travelling across a fairly close bed.
- A firm surface for close sleeping: The firm feel keeps you both on top of the mattress rather than rolling towards the middle, useful when you share a modest width.
- Easy to dress and to compare: Double bedding is stocked everywhere at every price, and the retailers listed on this page are the simplest way to compare the double on cost.
- Sensible for guest rooms: If this is a spare bed for visiting couples, the UK double is the smallest size two adults will genuinely thank you for.
This size suits you if...
You share the bed every night and your room sits around the typical UK size, where a UK king would leave you squeezing past the footboard. It also suits a solo sleeper who wants space to spread out, or a pet claiming a corner, without giving the whole room over to the bed. Allow at least 2.6m x 2.8m so drawers and bedside tables still fit.
Consider another size if...
You're a couple who both like space, or one of you sleeps on your side and needs room to shift position on a firm surface. The UK king is 15cm wider and 10cm longer; allow at least 2.7m x 2.9m for it.
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FAQ's
Is the UltraGel 1400 in a UK double big enough for a couple?
Yes, for most couples. The UK double gives 67.5cm each for two people sharing, which is workable rather than generous. The 1400 Mirapocket springs help here, because each side responds to that sleeper's weight independently. If either of you is broad shouldered or a restless sleeper, the UK king's extra 15cm of width is a real difference.
What room size do I need for a double UltraGel 1400?
We suggest at least 2.6m x 2.8m, with around 3m x 3m the comfortable norm. That allows bedside tables on both sides and space to open wardrobe doors, which matters in a first flat or a second bedroom where the bed shares the room with drawers and storage.
Does the firm feel work for two people on a UK double?
Firm mattresses suit shared beds of this width quite well, because you sleep on the surface rather than sinking towards each other. Back and front sleepers should get on with it. A lightweight side sleeper may find it a little unforgiving at the shoulder, and on a UK double there's less room to compensate by shifting position.
Should I get the UltraGel 1400 in a double or a king?
Choose the UK double if your room is near the typical UK size or you want to keep floor space for other furniture. The UK king is 15cm wider and 10cm shorter of nothing, sorry, 10cm longer, and needs at least 2.7m x 2.9m. If you can house it and share every night, the extra width is usually worth having.
What bedding fits the double UltraGel 1400?
Standard UK double sheets sized for a 135 x 190cm mattress, with a 200 x 200cm double duvet. Because the mattress is 29cm deep, look for fitted sheets that state a deep or extra-deep fit so the corners stay put. Double bedding is the most widely stocked size in the UK, so choice is wide at every price.