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.
- Room to spread out alone: At 30cm wider than the UK single, it means a solo sleeper can shift position freely across the cushioned pillowtop surface.
- Fits where a double will not: It is 15cm narrower than the UK double, which can be the difference between a door that clears and one that does not in a box room.
- Pocket springs matter at this width: The 1200 Mirapocket springs respond to your weight individually, so a restless solo sleeper moves easily rather than rolling toward a dip.
- Cooler in a snug room: Compact bedrooms can run warm, and the gel infused layer is designed to feel less heat-retentive than plain foam.
- Standard 4ft bedding: Small double fitted sheets are widely stocked in the UK, and the 28cm depth should suit most standard ones.
This size suits you if...
You sleep alone and have outgrown a UK single, perhaps a teenager's room where 30cm of extra width fits but the floor space for a full double does not. Or you're furnishing a guest room or holiday let where couples stay occasionally rather than nightly. It also suits a studio or loft conversion where every centimetre of width decides what else the room can hold.
Consider another size if...
You share the bed every night, because 120cm is tight for two adults long term. We'd recommend the UK double instead: it is 15cm wider, the same length, and needs a room of at least 2.6m x 2.8m.
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Is a UK small double big enough for the UltraGel 1200 pillowtop to make sense for a couple?
For occasional nights, yes. Across a 120cm width the individual pocket springs still limit partner disturbance, and the pillowtop cushions both sleepers. For every night as a couple, though, the UK small double is snug, and we'd suggest the UK double, which is 15cm wider at the same length.
What room size do I need for the small double UltraGel 1200?
We suggest a room of at least 2.4m x 2.8m. That leaves enough space to walk round the bed and open drawers or a wardrobe. If your room is right at that minimum, the 15cm you save against a UK double is usually the deciding factor in choosing this size.
How long is the Silentnight UltraGel 1200 in a small double?
It is 190cm long, the same as the UK single and UK double. If you're a taller sleeper who wants more legroom, the UK king is 10cm longer as well as 30cm wider, though it needs a room of at least 2.7m x 2.9m.
What bedding fits the small double UltraGel 1200?
You need small double, or 4ft, fitted sheets, which are a standard UK size and easy to find. A regular double duvet works well on top. The mattress is 28cm deep, so most standard fitted sheets should reach the corners without a struggle, though deep-fitted styles give a little extra security.
Is the small double worth it over the single for one person?
If the room can take it, usually yes. The extra 30cm of width lets you use the pillowtop's cushioning across a much larger surface, and side sleepers who change position often will feel the difference. The length is identical, so you're gaining pure spreading room rather than legroom.