Silentnight UltraGel 1200 Pocket Pillowtop Mattress
Mattress
Silentnight UltraGel 1200 Pocket Pillowtop Mattress
Size
Firmness
Construction
Depth (cm)
28
Layers
3
Layer Details
- UltraGel layer. A gel infused layer that responds to your movements and provides a cooling sensation. In practice, that means the surface should feel less heat-retentive than standard foam.
- Pillowtop. A plush pillowtop sewn on top for extra comfort and pressure relief to soothe aches and pains. This is what gives the mattress its softer initial feel before you reach the support layers.
- Mirapocket springs. 1200 Mirapocket springs provide zoned support, with each individual pocket spring adjusting to your body weight. That translates to ease of movement and a more undisturbed night's sleep if you share the bed.
Layer details from silentnight.co.uk product page, September 2026.
- The classic shared size: At 135 x 190cm you get 67.5cm each for two people sharing, which is the long-established standard for UK couples.
- Pocket springs matter more when sharing: The 1200 individual Mirapocket springs adjust to each body separately, which means less disturbance when your partner turns over in a bed you share nightly.
- Fits most UK bedrooms: We suggest a room of at least 2.6m x 2.8m, which typically still leaves space for bedside tables on both sides.
- Bedding is cheap and everywhere: Double sheets and duvets are stocked at every price point, a small saving that adds up if you're furnishing a whole home at once.
- Cooler for two: Two bodies generate more heat than one, so the gel infused comfort layer's cooling sensation is slightly more useful in a shared double than a single.
This size suits you if...
You're a couple after the traditional shared size and your bedroom sits around the 2.6m x 2.8m minimum we suggest, you're kitting out a first flat or a guest room where visiting couples need a proper bed, or you sleep alone and want space to spread out, perhaps with a dog or cat quietly claiming a corner.
Consider another size if...
You and your partner both like room to sprawl, or one of you is broad-shouldered and 67.5cm each feels tight. We'd recommend the UK king instead: it's 15cm wider and 10cm longer, and needs a room of at least 2.7m x 2.9m.
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Is the Silentnight UltraGel 1200 double big enough for two adults?
It works for most couples: at 135 x 190cm you each get 67.5cm of width, and the 1200 pocket springs limit how much you feel each other move. That said, if either of you is tall or a restless sleeper, the UK king adds 15cm of width and 10cm of length.
What room size do I need for the UltraGel 1200 in a UK double?
We suggest at least 2.6m x 2.8m, with around 3m x 3m the comfortable norm. That usually leaves room for a wardrobe, drawers and bedside tables on both sides, which is why the double remains the default in typical UK bedrooms and first flats.
Will the UK double UltraGel 1200 fit up narrow stairs?
Silentnight doesn't publish specific access guidance for this size, so measure the tightest point of your route first. Turning stairs in older terraces and tight new build landings are the usual pinch points for a 135cm wide hybrid, and the pocket-sprung core means it won't fold the way an all-foam mattress might.
What bedding fits the UltraGel 1200 double?
Standard UK double sheets and a 200 x 200cm double duvet. The mattress is 28cm deep, which most standard fitted double sheets should accommodate, though it's sensible to check the depth rating on the packaging. Double bedding is the most widely stocked size in the UK, so replacements are easy and cheap.
Should I get the UltraGel 1200 in a double or a king?
Choose the UK double if your room is near our suggested 2.6m x 2.8m minimum or you want the widest choice of bedding. Go for the UK king, which is 15cm wider and 10cm longer, if you have at least 2.7m x 2.9m and either of you sleeps restlessly.