Silentnight UltraGel 1000 Pocket Pillowtop Mattress
Mattress
Silentnight UltraGel 1000 Pocket Pillowtop Mattress
Size
Firmness
Construction
Depth (cm)
29
Layers
3
Layer Details
- Gel-infused comfort layer. A gel-infused foam layer that responds as you move, paired with breathable foam. In practice this means a responsive, slightly bouncy feel rather than the slow sink of traditional memory foam.
- Plush pillowtop. A soft pillowtop stitched to the surface for that sink-in feel. This is what gives the mattress its cushioned, medium soft character.
- Mirapocket springs. 1000 Mirapocket springs, each housed in its own fabric pocket so they move independently. Silentnight says the zoned design is scientifically proven to improve spinal alignment and posture, which you'll feel as firmer support where your body is heaviest.
Layer details from silentnight.co.uk product page, September 2026.
- The classic couples' fit: At 135 x 190cm you get 67.5cm each for two people sharing, enough for most couples who sleep fairly close.
- Pocket springs help when sharing: The 1000 Mirapocket springs move independently, which means your partner's turning over is less likely to travel across the mattress to your side.
- Room for bedside tables: In a typical UK bedroom of around 3m x 3m, a UK double usually leaves space for bedside tables on both sides, which a UK king often doesn't.
- Bedding is cheap and everywhere: Double sheets and a 200 x 200cm double duvet are stocked at every price point, so dressing this size costs less than the larger options.
- A soft feel that suits sharing side sleepers: The medium soft pillowtop lets shoulders and hips sink in slightly, which suits couples who both sleep on their side.
This size suits you if...
You share the bed every night and want the traditional couples' size, your bedroom sits around the 2.6m x 2.8m minimum we suggest and a UK king would crowd it, or you sleep alone and want proper room to stretch out, perhaps with a dog or cat claiming the far corner. It also makes a sensible guest room bed for visiting couples.
Consider another size if...
You and your partner both like space and your room can take a bigger bed, or one of you sleeps hot against the pillowtop and wants distance. We'd recommend the UK king instead, which is 15cm wider and 10cm longer; allow at least 2.7m x 2.9m for it.
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Is a UK double big enough for two on the UltraGel 1000?
For most couples, yes. You get 67.5cm each for two people sharing, and the 1000 Mirapocket springs move independently, so you feel less of your partner's movement. Because the medium soft pillowtop lets you sink in slightly, restless couples or those who like a wide gap between them may prefer sizing up to the UK king.
Will the UltraGel 1000 double fit in a small bedroom?
We suggest allowing at least 2.6m x 2.8m for a UK double, with around 3m x 3m the comfortable norm. In a second bedroom or first flat that also needs a wardrobe and drawers, the 135 x 190cm footprint usually works where a UK king would leave you squeezing past the bed.
What are the dimensions of the Silentnight UltraGel 1000 in a UK double?
The UK double measures 135 x 190cm, or 4ft 6in x 6ft 3in. That's 15cm wider than the UK small double and the same length, while the UK king is 15cm wider and 10cm longer than the UK double. The mattress itself is 29cm deep, so buy deep fitted sheets.
Should I get the UltraGel 1000 in a double or a king?
It comes down to room space versus sleeping space. The UK double is 15cm narrower and 10cm shorter than the UK king, and it fits comfortably in rooms where a king would dominate. If your bedroom offers at least 2.7m x 2.9m and you both like room to spread out, the UK king is the more comfortable long-term choice.
Is the UltraGel 1000 double a good guest room mattress?
It's a sensible choice, since a UK double accommodates visiting couples as well as solo guests. The medium soft feel is a matter of taste: side sleepers and lighter guests will likely enjoy the cushioned pillowtop, while anyone who prefers a firm surface may find it too yielding. Compare the retailers listed on this page for current prices.